The members of the Imperial Family at that time were usually named after their guardians, most of the time their menoto (wet nurse), and we can assume that Ichishihime no Okimi was dependent of the Ichishi no kimi clan (later Sukune [the third highest of the eight hereditary titles]) which emerged in Ichishi County, Ise Province.
当時の皇族の名は資養者の関係から命名され、乳母のウジが採られることが多いが、壱志姫王の場合も伊勢国一志郡に興る壱師君（後に宿禰）が扶養者であったと推測される。