After his death the family head was succeeded by his son-in-law, Sadakei MATSUDAIRA, who married his legal wife's child, Hatsuko because his first son, Sadanori's mother was a concubine and was still young.
死後、長男の定教は幼少で妾腹でもあったため、正室の子である初子に婿養子の松平定敬を迎え、家督を継がせた。