By tradition of Mushanokoji-senke, its iemoto takes over the real name of 'Soshu' ICHIO, whereas, koshi (the successor) of iemoto is referred to as 'Soya' and the retired iemoto is referred to as 'Soan,' the real name of GENPAKU.
武者小路千家の家元は一翁の諱「宗守」を受け継ぎ、家元後嗣は「宗屋」、隠居してからは元伯の諱「宗安」を名乗る伝統である。