Namesakes
Notable Actors and Entertainers:
3 actors
Kay Francis (a.k.a. Katharine) 1905-1968 
Katharine Hepburn 1907-2003
Katharine Ross 1940-
Notable Writers:
2 authors
Katharine Kerr 1944-
Kate Saunders 1960-2023
Olympic Medalists:
1 bronze
(bronze) Katharine Merry 2000 400 m
Oscar Award Winners:
1 actress
(actress) Katharine Hepburn 1934; 1968; 1969; 1982 Morning Glory; Guess Who's Coming to Dinner; The Lion in Winter; On Golden Pond
Saints:
1 saint
Saint Katharine Drexel 1858-1953
Shakespearian Characters:
2 characters
Katharine Love's Labour's Lost
Queen Katherine (a.k.a. Katharine) Henry VIII