In the samurai (warrior) class in particular, Haikomei had already spread in the Heian period, as seen by examples such as the legitimate son of MINAMOTO no Yoriyoshi taking the name MINAMOTO no Yoshiie and his younger brothers taking the names MINAMOTO no Yoshitsuna and MINAMOTO no Yoshimitsu.
とりわけ武士としては、源頼義の嫡男源義家と名乗り弟もそれぞれ源義綱、源義光等と名乗っているように平安時代には既に武士階級に広まっている。