Namesakes
Fictional Characters from Television:
1 character
Mac Taylor (a.k.a. Llewellyn) 2004 CSI: NY 
Notable Actors and Entertainers:
1 actor
Ruth Madoc (a.k.a. Llewellyn) 1943-2022
Olympic Medalists:
3 bronze
(bronze) Llewellyn Evans 1908 field hockey
(bronze) John Davies (a.k.a. Llewellyn) 1964 1500 m
(bronze) Llewellyn Herbert 2000 400 m hurdles