Harumoto was the son of [[Oyama Takatomo]] and was adopted by his uncle [[Yuki Masakatsu|Yûki Masakatsu]]. He was compelled to accept the authority of the [[Go-Hojo clan|Hôjô]] but severed his ties in 1590 when [[Toyotomi Hideyoshi]] came to [[Siege of Odawara|besiege]] the Hôjô's [[Odawara Castle]]. That same year he adopted [[Yuki Hideyasu|Hideyasu]], the second son of [[Tokugawa Ieyasu]], whom he later accompanied to [[Echizen province|Echizen]] after 1600. | Harumoto was the son of [[Oyama Takatomo]] and was adopted by his uncle [[Yuki Masakatsu|Yûki Masakatsu]]. He was compelled to accept the authority of the [[Go-Hojo clan|Hôjô]] but severed his ties in 1590 when [[Toyotomi Hideyoshi]] came to [[Siege of Odawara|besiege]] the Hôjô's [[Odawara Castle]]. That same year he adopted [[Yuki Hideyasu|Hideyasu]], the second son of [[Tokugawa Ieyasu]], whom he later accompanied to [[Echizen province|Echizen]] after 1600. |