Like other clans descended from the Minamoto, a name change occurred after a piece of land.
Minamoto no Yoshikiyo (1075-?)
As a member of the Minamoto Clan, Yoshikiyo would be given Kai Province from his father, who was given it by his father-in-law Taira no Kiyomori.
Takeda Yoshikiyo (?-1149)
Takeda (武田): (Japanese) bamboo field, after the domain in Hitachi Province.
The descendants of Yoshikiyo would become a prominent military family. The most notable member was Takeda Shingen.
Sources
- \”Takeda clan\”. www.shibuiswords.com.
- \”Takeda clan.\” Wikipedia.