Hideyoshi TOYOTOMI first referred to himself as Taira, but received the Fujiwara family name by becoming the adopted child of the Konoe family, one of Gosekke (five top Fujiwara families whose members were eligible for the positions of Sessho and Kanpaku), and became kanpaku (chief advisor to the Emperor).
豊臣秀吉ははじめ平氏を称していたが、五摂家の一つ・近衛家の猶子になることで藤原氏の姓を貰い関白になった。