Namesakes
Fictional Characters from Television:
4 characters
Lauren Colby (a.k.a. Constance) 1981 Dynasty 
Constance Colby 1985 The Colbys
Constance Langdon 2011 American Horror Story: Murder House
Connie "Meemaw" Tucker 2017 Young Sheldon
Notable Actors and Entertainers:
7 actors
Gladys Cooper (a.k.a. Constance) 1888-1971
Constance Bennett 1904-1965
Constance Cummings 1910-2005
Kim Winona (a.k.a. Constance) 1930-1978
Constance Zimmer 1970-
Constance Wu 1982-
Maisie Williams (a.k.a. Constance) 1997-
Olympic Medalists:
1 bronze, 1 silver, 1 silver/bronze/gold
(bronze) Constance Titus 1904 rowing
(silver) Constance Jeans 1920; 1924 swimming - 4x100 m freestyle relay
(silver/bronze/gold) Libby Trickett (a.k.a. Constance) 2004; 2008; 2012 swimming - 50 m freestyle; swimming - 100 m butterfly; swimming - 100 m freestyle; swimming - 4x100 m medley relay; swimming - 4x100 m freestyle relay
Other Royalty:
1 duchess
Constance, Duchess of Brittany 1166-1201 Brittany
Saints:
2 saints
Saint Constantius of Perugia (a.k.a. Constance) ?-170
Saint Constantina (a.k.a. Constance) ?-354
Shakespearian Characters:
1 character
Lady Constance King John