Namesakes
Hall-of-Famers:
1 ice hockey
(ice hockey) Syl Apps 1961 
Notable Actors and Entertainers:
1 actor
Richard Arlen (a.k.a. Sylvanus) 1899-1976
Notable Athletes:
1 ice hockey
(ice hockey) Syl Apps 1915-1998
Saints:
2 saints
Saint Silvanus of Ahun (a.k.a. Sylvanus) ?-264
Saint Silvanus of Pisidia (a.k.a. Sylvanus) ?-c. 300