His grandsons are actors Gregg Marx, Chris Marx, and actor/producer Brett Marx, who as a child actor appeared as 'Jimmy Feldman' in 1976's comedy film The Bad News Bears.
Karl Marx | Groucho Marx | Marx | Marx Brothers | Richard Marx | Brett Ratner | Harpo Marx | Brett Lee | Brett Favre | Brett Whiteley | Brett Maher | Philipp Marx | George Brett | Brett Dennen | Simon Brett | Louis Marx and Company | Karl Marx-Hof | Jeremy Brett | Chico Marx | Brett Weston | Brett Somers | Barbara Marx Hubbard | Zeppo Marx | Wilhelm Marx | Roberto Burle Marx | Leo Marx | George Brett (baseball) | Francis Brett Young | Eleanor Marx | Brett Tucker |