Name Game

What do the following names have in common? Upper-class twit of the year finalists? Refugees from a game of "Clue"? Members of "The 400"? Yale Alums?

Holly Clarendon
Morton Kendall
Dale LaGrange
Dayton Welsley
Gerry Kennedy
Alfred Canisteo
Burt Wilson
Marilla Springbrook
Clarence Crittendon
Hume Fillmore
Tyrone Weston
Sonora Bradford
Wallace Wheeler
Roy Stafford
Wayne Dundee
Hector Valois
Catharine Millport
Borden Lindley
Thurston Campbell
Rose Butler
Alton Wolcott