After his son Akiie died in a war in 1338, Chikafusa cooperated with Ieyuki WATARAI to strengthen the power of the Southern Court in Ise Province.
1338年（延元3年/暦応元年）に息子顕家が戦死した後、親房は伊勢国において、度会家行の協力を得て南朝勢力の拡大を図る。