After his death, his eldest son Tadayuki MATSUDAIRA inherited the family heritage and 80,000 koku out of 90,000, with the remaining 10,000 koku going to his second son Nobumichi MATSUDAIRA.
信之死後の貞享3年（1686年）8月、家督と所領9万石の内の8万石は長男の松平忠之が継ぎ、残りの1万石は次男の松平信通が継いだ。