I suppose the "White Russian"[§] emigré / exile community of the 1920s and 30s in cities like London and Paris kind of died out... Most of them were nobility anyway, so at a guess their descendants might be too snobbish to mingle with GP in any case.
___
[§]: Not "White Russia" as in Byelorussia / Belarus; "White" as opposed to "Red".
___
[§]: Not "White Russia" as in Byelorussia / Belarus; "White" as opposed to "Red".