I've been doing some research on the intermarriage policies of the Mongol Empire, based on the work of Zhao Qingzhi, and all I can say is whoa~. The Chinggisids were almost as inbred as latter-day Habsburgs. Here's a very rough cut that should give you a basic idea of what we're working with, here.
TEMUGIN, better known as GENGHIS KHAN, had by his chief wife Borte:
*1. JOCHI (paternity disputed)
** (by Sorghan) ORDA, Khan of the Blue Horde
*** SARTAKTAI
** (by Uhka Fujin, daughter of Anchen) BATU, Khan of the Golden Horde
*** TUKAN
**** (by Kuchu) MENGU-TEMUR, Khan of the Golden Horde
***** TOKHTAI, Khan of the Golden Horde. He married Maria Palaiologina, illegitimate daughter of the Byzantine emperor Andronikos II.
****** [possible daughter by Maria Palaiologina] Maria, married Narimantas of Lithuania
***** Anna, married Feodor Rostislavich, prince of Yaroslavl
****** David Feodorovich
****** Konstantin Feodorovich
** BERKE, Khan of the Golden Horde
** TEVAL
*** TATAR
**** NOGAI, kingmaker of the Golden Horde. One of his wives was Euphrosyne Palaiologina, daughter of the Byzantine emperor Mikhael VIII.
***** CHAKA, tsar of Bulgaria, married Elena of Bulgaria.
*2. CHAGATAI, Khan of the Chagatai
** MUTUKAN
*** YESUNTAWA
**** QARA-HULAGU, Khan of the Chagatai Horde
**** BARAK, Khan of the Chagatai Horde
***** DUWA, Khan of the Chagatai Horde
****** ESEN BUKA, Khan of the Chagatai Horde
******* TUGHLUGH TIMUR, Khan of the Chagatai Horde
******** KHIZIR KHOJA, Khan of the Chagatai Horde
********* MUHAMMAD, Khan of Moghulistan
********** SHER ALI OGLAN
*********** UWAIS, Khan of Moghulistan
************ YUNUS, Khan of Moghulistan
************* Qutlugh Nigar, married Omar Shaikh (descendant of Tamerlane)
************** BABUR, Moghul Emperor of India
*3. OGODEI
** GUYUK
*** Daughter, married Tanggis of the Oirat tribe
**** Kutlug, married ARGHUN, Il-Khan of Persia (see below)
** Suorhahan, married Nahe (grandson of Anchen)
** KADAN
** KOCHI
*** (by Katakash, granddaughter of Anchen) SHIRAMUN
** KUOCHU
*** Antu, married Suorha of the Ikires tribe
**** Kuruktai (Hutuheitei), married MONGKE
**** Zhawu-Erchen
***** Suolangha, married Nuwulun, daughter of MANGKALA
***** Hulian, married Boyaluhan, daughter of MONGKE (see below)
*4. TOLUI. Among his wives was Dokuz, later the wife of his son Hulagu.
** (by Sorkaktani Beki) MONGKE
*** (by Oghulkamish, daughter of Kutuka Beki) Shirin
*** Boyaluhan, married Hulian of the Ikires tribe
**** Ashi, married Yilihaiya, daughter of Emperor Chenzong.
** (by Sorkaktani Beki) KHUBILAI
*** (by Chabui) DORJI, died young.
*** (by Chabui, daughter of Anchen) MANGKALA
**** (by Khutui, niece of Anchen) ANANDA
**** Nuwulun, married Suolangha of the Ikires tribe
***** Yikilieshi, married Emperor Wuzong and was mother of Emperor Mingzong (see below)
*** (by Asuzhen) Khudulu Khaimish, married Chungnyeol, king of Goryeo
**** Chungseon (Wang Won), king of Goryeo, married Irinjinbala, daughter of ESEN-TEMUR.
*** Tumanlun, married Chigu son of Anchen
*** CHINGGIS
**** ESEN-TEMUR
***** Irinjinbala, married King Chungseon of Goryeo
*** (by Chabui) ZHENJIN. He married Kokochin of the Kunkurat tribe.
**** TEMUR OLJEYTU, Emperor Chengzong
***** Yilihaiya, married Ashi
****** Sugebala, married Emperor Yingzong
****** Yilianzhenbala, married Emperor Taiding
**** KAMALA
***** YESUN TEMUR, Emperor Taiding
***** Shouning, married Maizhuhan son of Bengbula (and a great-grandson of Anchen)
****** Sadabala, married her uncle Emperor Taiding
****** Bihan, married her uncle Emperor Taiding
****** Babusha, married Emperor Mingzong and was mother of Emperor Ningzong
**** DARMABALA
***** Xianggelaji, married Diwabula (see below)
***** AMOGA, Prince of Wei
****** Botasirin, married Gongmin, King of Goryeo
***** KULUG KAISHAN, Emperor Wuzong. Among his wives was Zhenge (daughter of Bengbula, and a descendant of Anchen) and Sugeshili (daughter of Harzhi, son of Manggechen, and a descendant of Dei Sechen).
****** (by Yikilieshi, daughter of Suolangha of the Ikires tribe) KUSHALA, Emperor Mingzong. Among his wives was Buyanhudu, daughter of Buluo Temur (a son of Bengbula, thusly a descendant of Anchen)
******* (by Malaidi) TOGHAN TEMUR UKHAANTU, Emperor Huizong
******** (by Lady Qi, a Korean palace servant) AYURSHIRIDARA
******* (by Babusha) RICHINBAL, Emperor Ningzong
****** (by Daji, daughter of Hundu-tiemur, grandson of Anchen) TOK TEMUR JAYAATU, Emperor Wenzong
******* (by Budashiri) ALATENASHINA, died young
******* (by Budashiri) GUNADALA
***** AYURBAWADA, Emperor Renzong
****** (by Rhadnashiri) SHIDIBALA GEGEEN, Emperor Yingzong
*** Nangjiazhen, married Woluochen, Tiemur, and Manzitai (all three were brothers, sons of Nachen and grandsons of Anchen)
**** (by Tiemur) Diwabula
***** (by Xianggelaji, daughter of Darmabala) Budashiri, married Emperor Wenzong
*** Wuluzhen, married Buhua of the Ikires tribe
** (by Sorkaktani Beki) ARIK BOKE
*** Numugan, married Junan of the Oirat tribe
** (by Sorkaktani Beki) HULAGU. Among his wives was Dokuz, also his stepmother.
*** (by Kubak, daughter of Torolchi) JUMKUR
*** (by Yesunchin) ABAKA, Il-Khan of Persia. His wives included Maria Palaiologina (illegitimate daughter of Mikhael VIII, Byzantine emperor) and Padishah of Kirman.
**** (by Kaimish Igaji) ARGHUN, Il-Khan of Persia
***** (by Kutlug, daughter of Tanggis) GHAZAN, Il-Khan of Persia. Among his wives was his stepmother, Kokaji.
****** (by Kokaji) ALJU
****** (by Kokaji) Oljai
***** (by Uruk) OLJAYTU (Nicholas), Il-Khan of Persia
***** (by Kokaji) Dilanji
**** (by Nukdan) GAYKHATU, Il-Khan of Persia. Among his wives were his stepmothers, Padishah of Kirman and Kokaji.
***** (by Kokaji) JINGPULAD
**** Oljai, married firstly Vakhtang II, king of Georgia, and secondly Davit VIII, king of Georgia.
*** (by Kutui) AHMED TEKUDER, Il-Khan of Persia
*** Todogach, married Tanggis of the Oirat tribe, then remarried to Tanggis' son Sulamish, then remarried to Sulamish's son Chechak
**** (by Sulamish) Oljatai, married ARGHUN Il-Khan of Persia
** Yesubuhua, married Wochen son of Anchen.
** (by Lingkun) Yantiemur, married Pars Buka of the Oirat
*5. Checheyigan, married Torolchi of the Oirat
** Orqina, married QARA-HULAGU
** Ailikmish, married ARIK BOKE
** Kuchu, married TUKAN
** Kubak, married HULAGU
** Pars Buka, married Yantiemur, daughter of TOLUI
Oh, and that Anchen guy who's name keeps popping up? Anchen was the brother of Borte, Genghis Khan's chief wife and the mother of his most important offspring. Everyone in this list is descended from him in what seems like five ways.
Here's something kinda cool, though. Due to the Mongol exogamous intermarriage policy and tendancy to install their princes and princesses, cuckoo bird-like, in subjugated nations, there were nobly-born descendants of Genghis Khan from one end of the empire to the other. Therefore, Chungseon of Korea and the princes David and Konstantin Feodorovich of Yaroslavl were born thousands of miles away from one another and possibly never knew of the other's existances. But David and Konstantin were third cousins twice removed to Chungseon, thanks to a common descent from Genghis Khan and Borte (or just Borte if you want to be a pedant about it).
TEMUGIN, better known as GENGHIS KHAN, had by his chief wife Borte:
*1. JOCHI (paternity disputed)
** (by Sorghan) ORDA, Khan of the Blue Horde
*** SARTAKTAI
** (by Uhka Fujin, daughter of Anchen) BATU, Khan of the Golden Horde
*** TUKAN
**** (by Kuchu) MENGU-TEMUR, Khan of the Golden Horde
***** TOKHTAI, Khan of the Golden Horde. He married Maria Palaiologina, illegitimate daughter of the Byzantine emperor Andronikos II.
****** [possible daughter by Maria Palaiologina] Maria, married Narimantas of Lithuania
***** Anna, married Feodor Rostislavich, prince of Yaroslavl
****** David Feodorovich
****** Konstantin Feodorovich
** BERKE, Khan of the Golden Horde
** TEVAL
*** TATAR
**** NOGAI, kingmaker of the Golden Horde. One of his wives was Euphrosyne Palaiologina, daughter of the Byzantine emperor Mikhael VIII.
***** CHAKA, tsar of Bulgaria, married Elena of Bulgaria.
*2. CHAGATAI, Khan of the Chagatai
** MUTUKAN
*** YESUNTAWA
**** QARA-HULAGU, Khan of the Chagatai Horde
**** BARAK, Khan of the Chagatai Horde
***** DUWA, Khan of the Chagatai Horde
****** ESEN BUKA, Khan of the Chagatai Horde
******* TUGHLUGH TIMUR, Khan of the Chagatai Horde
******** KHIZIR KHOJA, Khan of the Chagatai Horde
********* MUHAMMAD, Khan of Moghulistan
********** SHER ALI OGLAN
*********** UWAIS, Khan of Moghulistan
************ YUNUS, Khan of Moghulistan
************* Qutlugh Nigar, married Omar Shaikh (descendant of Tamerlane)
************** BABUR, Moghul Emperor of India
*3. OGODEI
** GUYUK
*** Daughter, married Tanggis of the Oirat tribe
**** Kutlug, married ARGHUN, Il-Khan of Persia (see below)
** Suorhahan, married Nahe (grandson of Anchen)
** KADAN
** KOCHI
*** (by Katakash, granddaughter of Anchen) SHIRAMUN
** KUOCHU
*** Antu, married Suorha of the Ikires tribe
**** Kuruktai (Hutuheitei), married MONGKE
**** Zhawu-Erchen
***** Suolangha, married Nuwulun, daughter of MANGKALA
***** Hulian, married Boyaluhan, daughter of MONGKE (see below)
*4. TOLUI. Among his wives was Dokuz, later the wife of his son Hulagu.
** (by Sorkaktani Beki) MONGKE
*** (by Oghulkamish, daughter of Kutuka Beki) Shirin
*** Boyaluhan, married Hulian of the Ikires tribe
**** Ashi, married Yilihaiya, daughter of Emperor Chenzong.
** (by Sorkaktani Beki) KHUBILAI
*** (by Chabui) DORJI, died young.
*** (by Chabui, daughter of Anchen) MANGKALA
**** (by Khutui, niece of Anchen) ANANDA
**** Nuwulun, married Suolangha of the Ikires tribe
***** Yikilieshi, married Emperor Wuzong and was mother of Emperor Mingzong (see below)
*** (by Asuzhen) Khudulu Khaimish, married Chungnyeol, king of Goryeo
**** Chungseon (Wang Won), king of Goryeo, married Irinjinbala, daughter of ESEN-TEMUR.
*** Tumanlun, married Chigu son of Anchen
*** CHINGGIS
**** ESEN-TEMUR
***** Irinjinbala, married King Chungseon of Goryeo
*** (by Chabui) ZHENJIN. He married Kokochin of the Kunkurat tribe.
**** TEMUR OLJEYTU, Emperor Chengzong
***** Yilihaiya, married Ashi
****** Sugebala, married Emperor Yingzong
****** Yilianzhenbala, married Emperor Taiding
**** KAMALA
***** YESUN TEMUR, Emperor Taiding
***** Shouning, married Maizhuhan son of Bengbula (and a great-grandson of Anchen)
****** Sadabala, married her uncle Emperor Taiding
****** Bihan, married her uncle Emperor Taiding
****** Babusha, married Emperor Mingzong and was mother of Emperor Ningzong
**** DARMABALA
***** Xianggelaji, married Diwabula (see below)
***** AMOGA, Prince of Wei
****** Botasirin, married Gongmin, King of Goryeo
***** KULUG KAISHAN, Emperor Wuzong. Among his wives was Zhenge (daughter of Bengbula, and a descendant of Anchen) and Sugeshili (daughter of Harzhi, son of Manggechen, and a descendant of Dei Sechen).
****** (by Yikilieshi, daughter of Suolangha of the Ikires tribe) KUSHALA, Emperor Mingzong. Among his wives was Buyanhudu, daughter of Buluo Temur (a son of Bengbula, thusly a descendant of Anchen)
******* (by Malaidi) TOGHAN TEMUR UKHAANTU, Emperor Huizong
******** (by Lady Qi, a Korean palace servant) AYURSHIRIDARA
******* (by Babusha) RICHINBAL, Emperor Ningzong
****** (by Daji, daughter of Hundu-tiemur, grandson of Anchen) TOK TEMUR JAYAATU, Emperor Wenzong
******* (by Budashiri) ALATENASHINA, died young
******* (by Budashiri) GUNADALA
***** AYURBAWADA, Emperor Renzong
****** (by Rhadnashiri) SHIDIBALA GEGEEN, Emperor Yingzong
*** Nangjiazhen, married Woluochen, Tiemur, and Manzitai (all three were brothers, sons of Nachen and grandsons of Anchen)
**** (by Tiemur) Diwabula
***** (by Xianggelaji, daughter of Darmabala) Budashiri, married Emperor Wenzong
*** Wuluzhen, married Buhua of the Ikires tribe
** (by Sorkaktani Beki) ARIK BOKE
*** Numugan, married Junan of the Oirat tribe
** (by Sorkaktani Beki) HULAGU. Among his wives was Dokuz, also his stepmother.
*** (by Kubak, daughter of Torolchi) JUMKUR
*** (by Yesunchin) ABAKA, Il-Khan of Persia. His wives included Maria Palaiologina (illegitimate daughter of Mikhael VIII, Byzantine emperor) and Padishah of Kirman.
**** (by Kaimish Igaji) ARGHUN, Il-Khan of Persia
***** (by Kutlug, daughter of Tanggis) GHAZAN, Il-Khan of Persia. Among his wives was his stepmother, Kokaji.
****** (by Kokaji) ALJU
****** (by Kokaji) Oljai
***** (by Uruk) OLJAYTU (Nicholas), Il-Khan of Persia
***** (by Kokaji) Dilanji
**** (by Nukdan) GAYKHATU, Il-Khan of Persia. Among his wives were his stepmothers, Padishah of Kirman and Kokaji.
***** (by Kokaji) JINGPULAD
**** Oljai, married firstly Vakhtang II, king of Georgia, and secondly Davit VIII, king of Georgia.
*** (by Kutui) AHMED TEKUDER, Il-Khan of Persia
*** Todogach, married Tanggis of the Oirat tribe, then remarried to Tanggis' son Sulamish, then remarried to Sulamish's son Chechak
**** (by Sulamish) Oljatai, married ARGHUN Il-Khan of Persia
** Yesubuhua, married Wochen son of Anchen.
** (by Lingkun) Yantiemur, married Pars Buka of the Oirat
*5. Checheyigan, married Torolchi of the Oirat
** Orqina, married QARA-HULAGU
** Ailikmish, married ARIK BOKE
** Kuchu, married TUKAN
** Kubak, married HULAGU
** Pars Buka, married Yantiemur, daughter of TOLUI
Oh, and that Anchen guy who's name keeps popping up? Anchen was the brother of Borte, Genghis Khan's chief wife and the mother of his most important offspring. Everyone in this list is descended from him in what seems like five ways.
Here's something kinda cool, though. Due to the Mongol exogamous intermarriage policy and tendancy to install their princes and princesses, cuckoo bird-like, in subjugated nations, there were nobly-born descendants of Genghis Khan from one end of the empire to the other. Therefore, Chungseon of Korea and the princes David and Konstantin Feodorovich of Yaroslavl were born thousands of miles away from one another and possibly never knew of the other's existances. But David and Konstantin were third cousins twice removed to Chungseon, thanks to a common descent from Genghis Khan and Borte (or just Borte if you want to be a pedant about it).