Since he succeeded to the head family of Kodama Party and Yoriie SHO, the sixth head, was killed at a young age on the Battle of Ichinotani, Ienaga had Yoriie family adopt his third son Ietsugu SHO (Yoriie's younger brother) as the heir and had Ietsugu succeed to the head family of Kodama Party.
児玉党の本宗家を継ぎ、6代目となった庄頼家が一ノ谷の戦いで若くして戦死した為、家長は三男である庄家次（頼家の弟）を頼家家の養子として迎えさせ、児玉党本宗家7代目を継がせる。