Kujō Yoritsune

Kujō Yoritsune (九条 頼経^?, February 12, 1218 – September 1, 1256, r. 1226–1244), also known as Fujiwara no Yoritsune, was the fourth shogun of the Kamakura shogunate of Japan. His father was kanpaku Kujō Michiie and his grandmother was a niece of Minamoto no Yoritomo. His wife was a granddaughter of Minamoto no Yoritomo and daughter of Minamoto no Yoriie, known as Minamoto no Yoshiko. Later she died after giving birth to Kujō Yoritsugu .He was born in the year (according to Chinese astrology) of the Tiger, in the month, on the day, and so his given name at birth was Mitora (三寅, "Triple Tiger").

Yoritsune was a member of the great Fujiwara clan. The Kujō family was one of the five branches of the historically powerful Fujiwara clan of courtiers.

At the age of seven, in 1226, Yoritsune became Seii Taishōgun in a political deal between his father and the shogunate regent Hōjō Yoshitoki and Hōjō Masako who set him up as a puppet shogun.

The years in which Yoritsune was shogun are more specifically identified by more than one era name or nengō.

...
Wikipedia