Although the first family name of Sho clan is said to have been Fujiwara clan, it was the new name obtained by changing its family name after the mid 14th century (after the Kamakura period), and it was properly to be Arimichi clan.
庄氏の初姓は藤原氏となっているが、これは14世紀中頃以降（鎌倉期以後）に改姓したものであり、本来は有道氏である。