It did not mean 'the Sho clan of the head family,' but it was considered that he used the name of Honjo that had a meaning of 'the Sho clan remained in the home ground (本 pronounce hon, meaning local).'
その意味は、「本宗家の庄氏」と言う意味ではなく、「本拠地（本＝地元）に残った庄氏」と言う意味で本庄を名乗ったものと考えられる。