The postscript of 'Konshiki Kinginji Kosho Issaikyo, Daibon-kyo, Kan 22' (Complete Buddhist Scriptures Written in Gold and Silver on Dark Blue Paper, Mahaprajnaparamita-sutra, Volume 22) indicates that Kiyohira had six sons and three daughters at that time.
「紺紙金銀字交書一切経　大品経　巻二十二」の奥書から、元永2年（1119年）当時清衡には6男3女の子供がいたと見られる。