Well, Althea first entered the US Open in 1950 and didn't win it til 1957. Her first trips overseas was 1956, as far as I can tell, producing her first Slam at RG. Could be she didn't have the money to play in Europe. Truthfully, I doubt it would have been much different. She might have gotten to 8 or so.
You have to answer for Santino, Carlo.