By the way, the surname 'Yoshimune' was not another name for all members of the Koremune clan, but was granted around 999 only to Tadasuke and KOREMUNE no Tadamasa, who is thought to be Tadasuke's younger brother.
なお、「令宗」（よしむね）の姓は、惟宗氏全員の改姓ではなく、長保元年（999年）頃、允亮と彼の弟と思われる惟宗允正のみに与えられた。