Takeda Clan kamon with clan name T-Shirt

The Takeda clan (武田) was a famous Japanese clan active from the late Heian period until the late 16th century. The clan was historically based in Kai Province in present-day Yamanashi Prefecture. The clan was known for their honorable actions under the rule of Takeda Shingen, one of the most famous rulers of sengoku jidai, the warring period of feudal Japan. This is the kamon (family crest/emblem) of the Takeda clan, this crest is known as the "Takeda Diamond" and is shared by all Takeda families across the country who claim the Kai Genji as their ancestors. There is also a version known as the "Flower Diamond" in which the diamond is made up of four petals. Below the crest is "Takeda" in kanji.