In the Middle Ages, many families having their origin in the Murakami-Genji called themselves Chigusa and an example is Michisuke CHIGUSA, the child of Michiteru and the greatgreat-grandchild of Michitada KOGA, who was called Chigusa Saki no Daijo-daijin (former grand minister of state).
同じく通光の子・久我通忠の玄孫の千種通相は千種前太政大臣と称せられるなど、中世において村上源氏の一族で千種姓を名乗るものは多かった。