His brothers included MINAMOTO no Tadataka and MINAMOTO no Tadakuni and his children included MINAMOTO no Sadamune, MINAMOTO no Sadashige, wife of FUJIWARA no Kaneyori and Naishi no Kii (Kii, maid of honor) (who is considered to be Yushi Naishinno-ke no Kii [Kii, Lady-in-Waiting to Imperial Princess Yushi]).
兄弟に源忠隆、源忠国らがあり、子に源定宗、源定重、藤原兼頼室、内侍紀伊（祐子内親王家紀伊？）らがある。