The children of Norimori MATSUDAIRA, the eldest son Norikuni and the second son Norito MATSUDAIRA, died early, so he was adopted by the Iwamura Domain of Mino Province since his real father Totsuna was originally from the Ogyu-Matsudaira family of the Iwamura Domain.
松平乗薀の長男・乗国、次男・乗遠がいずれも早世し、実父の玄綱が岩村藩大給松平家出身であったことから、美濃岩村藩の養子に迎えられる。