Namesakes
Australian Prime Ministers:
1 prime minister
Edmund Barton 1901-1903 
Fictional Characters from Books:
1 character
Mary Barton 1848 Mary Barton
Nobel Prize Winners:
1 chemistry
(chemistry) Derek Barton 1969
Notable Actors and Entertainers:
1 actor
Mischa Barton 1986-
Other Notables:
1 person
Clara Barton 1821-1912 nursing