The term 'Diamond Family Name' is a crossword puzzle answer that can be solved with the solutions ALOU (4 letters), ALOUS (5 letters), and BRADY (5 letters). The ALOU family is a Dominican-American baseball family, with Felipe ALOU, Matty ALOU, and Jesus ALOU all playing in Major League Baseball. The Alous are a family of professional baseball players from Venezuela, with Moises ALOU, Mel Rojas, and Jose ALOU all playing in the MLB. The Brady family is an American football family, with Tom Brady being the most famous member of the family.