RadarOnline.com can exclusively reveal Meghan Markle’s protective nephew has launched a furious attack on his own father after he urged Prince Harry to call off the royal wedding. The actress’s half-brother Thomas Markle Jr. branded her a “jaded, shallow, conceited woman” in a venom-filled open letter, which recently surfaced. But his son is fighting back on Meghan’s behalf, saying he’s nothing but an embarrassment. “I’ve tried for over a decade to have a relationship with him, but this is the last straw, I no longer wish to know him,” Thomas Dooley, who lives in a small mountain town in California, told Radar. “He comes in like a tornado everywhere he goes, he’s just doing all of this for the money.” Click through the gallery to find out more.

Dooley, pictured here, insisted his uncle’s “the one who has shown his true colors.” He added: “I no longer feel responsible for not having a relationship with him.”

“I saw him say he wants the chance to be an uncle to Meghan’s future children, he can’t even be a father!” blasted Dooley. “I get along so well with the rest of his family, he’s really the only one I’ve had an issue with. I love my grandparents to death.”

Addressing Harry in his open letter, the future princess’ half-brother wrote: “Meghan Markle is obviously not the right woman for you. I'm confused why you don't see the real Meghan that the whole world now sees. Meghan's attempt to act the part of a princess like a below C average Hollywood actress is getting old.”

“What kind of person starts out by using her own father until he's bankrupt, then forgets about him in Mexico leaving him broke, over mostly all her debts,” Meghan’s half-brother questioned.