Danny Dyer was delighted to receive a letter from his "cousin" Prince Charles welcoming him to the family.
The "EastEnders" actor surprisingly discovered he is distantly related to King Edward III and William The Conqueror during a 2016 appearance on "Who Do You Think You Are?, and his wife Joanne Mas has revealed he was pleased to receive a note from Charles, who is next in line to the throne.
She is quoted by the Daily Star newspaper as saying: "I can't really say too much, but Prince Charles wrote to Danny.
"When he got the letter he was like, "Look at me - he's my cousin." "
It's not the first time Danny has been in contact with Charles since he discovered his royal heritage.
The "Football Factory" actor shook hands with the future king at a Prince's Trust event in March and appeared delighted to tell the Prince of Wales that they were related.
He told the 70-year-old prince: "Just wanted to let you know we're related."
Charles seemed slightly surprised and one of his aides chuckled.
In January, Danny - who plays pub landlord Mick Carter on the BBC One soap - admitted he thinks the Royal Family see him as one of their "embarrassing cousins they don't want to acknowledge".
He said at the time: "I haven't heard anything from the Royal Family. I'm clearly one of their embarrassing cousins they've got but don't want to acknowledge.
"I could be mixing in those circles. I don't know it would be nice if they did want to acknowledge it. Maybe one day.
"I heard the queen is a fan of "EastEnders" though. I heard she always watches the Christmas special, which is nice I suppose."