Five generations after Katsumine MIZUNO died young at the age of two, the family line was lost due to the absence of an heir; however, as many people missed them because the Mizuno clan was renowned, Katsunaga, a grandson of Katsunari, was allowed to succeed to the family and maintain their family name.
5代勝岑が2歳で夭折すると跡目を失い断絶となるが、名門の家柄が惜しまれ勝成の孫である勝長が跡目を継ぎ家名の存続が許された。