The Japanese surnames etymology dictionary.
③ Ibaraki-ken Yuuki-gun Yachiyo-machi Origin of Sugaya (SUENOYA). A place name with a record since the Edo period. The place name also pronounced Sugaya. Aichi-ken Nagoya-shi Honmaru Honmaru was in the Edo period in the Owarii clan in the Clan office. Tradition of the same samurai.
⑥ Abbreviation . Sugawara's abbreviation. Iwate-ken Hanamaki-shi Towa Town tells us that since Sugawara surname was a lot, we changed the name to "Kan" at the end of the Edo period. Crest is a plum bowl in a circle. Kyouto-fu Kyouto-shi was in the Edo period. I will tell Mr. Sugawara's descendant in the same place. 菅原 reference.