His wife and the wife of Jukei HANAYAGI, the second head of the HANAYAGI School of Japanese dance, who changed his name from Jusuke HANAYAGI II, are sisters (KATAOKA's wife is younger).
日本舞踊花柳流二代目家元・二代目花柳壽輔改め花柳壽應とは、妻同士が姉妹（片岡のほうが妹）。