He first appeared in the historical materials, when he granted hikan (low-level bureaucrat), 倉持忠行, sodehan kudashibumi (document issued by a superior or office with a signature ["han"] in the right hand margin ["sode"]).
家時の活動の初見は文永3年（1266年）に被官倉持忠行に袖判下文を与えたことである。