American musician and actor Bill Hudson has disowned two of the five biological children he had with ex-wife Goldie Hawn. Hudson also accused his ex-wife of "willfully alienating" him from his two eldest offspring, Oliver and Kate Hudson.

Hudson's move was triggered by a harsh Father’s Day Instagram post by Oliver, showing himself and Kate as kids with Hudson. “Happy abandonment day,” Oliver captioned the picture. He also posted a photo of himself with stepdad Kurt Russell, adding the caption: “Happy Father’s Day, Pa.”

“I say to them now, 'I set you free',” the 65-year-old Hudson told Mail Online via Us Magazine. “I had five birth children but I now consider myself a father of three. I no longer recognize Oliver and Kate as my own.” He also requested that Oliver and Kate stop using “Hudson” as their last name, as he did not consider them as a part of his life any longer. “Oliver’s Instagram post was a malicious, vicious, premeditated attack. He is dead to me now. As is Kate. I am mourning their loss even though they are still walking this earth,” he said.

The “Oh Gabriel” singer also said the story of his life “is more messed up and sad than any Hollywood screenplay could ever be,” he said. He added that his relationship with Hawn was fine until she met Kurt Russell.

“When we split up, she never had a bad word to say about me,” Hudson said. "But when Kurt came on the scene, the narrative changed and I became the big, bad wolf. I would say to her, 'Goldie, why are you trashing me and saying I’m an absent father when it’s simply not the case?' And she’d laugh and go, 'Oh Bill, you know it makes for a better story'," Hudson said.

After his divorce from Hawn, Hudson married "Laverne & Shirley" actress Cindy Williams in 1982. The couple had two children, Emily and Zachary Hudson, and divorced in 2000.

If Kate Hudson decides to drop the Hudson name, that could be good news for singer Katy Perry, who was born Katheryn Hudson. Perry changed her name in part to avoid being confused with Kate Hudson.