Summer House star Carl Radke has revealed his legal first name. "My middle name is Carl. We always, for whatever reason, as a family went by [our] middle names," Radke, 40, said in a Friday, August 8, TikTok video shared by Popviewers. "My brother even went by his middle name, but on my ID and my passport, my first name is William." Radke, whose brother Curtis died in 2020, further revealed that he has "always" been known as Carl. "Since Day 1, [I] have been called Carl," the Bravo star said. "It's a family thing. My mom has a different explanation for it, which I don't understand.