Takamatsu initially served Takeda Nobutora. While not at first a retainer of high rank, Takayoshi attracted Takeda Shingen's attention for his bravery in battle and his skill at bow and arrow. He was killed in close combat with the Murakami at Toishii in 1550. His death came as a blow to Shingen, who had advised his younger retainers to follow Takatoshi's example. Takayoshi's house was succeeded by Yasukage (1524-1575, killed at Nagashino), a son of Hara Toratane.
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005