The fifth family head, Yoritsuna UTSUNOMIYA (FUJIWARA no Yoritsuna) was a warrior who had a great achievement in the subjugation of the Oshu-Fujiwara clan, but he was suspected of rebellion by the Kamakura bakufu (Japanese feudal government headed by a shogun).
また第5代宇都宮頼綱（藤原頼綱）は武人で奥州藤原氏討伐にも功績があったが、鎌倉幕府から謀反の嫌疑をかけられた。