Yes, the word 'Trevor' is a noun, a proper noun, the name of a person. A proper noun is always capitalized.
Trevor Brolin's birth name is Trevor Mansur Brolin.
Trevor = Kalewa
The possessive forms are Trevor's and Lesley's; or Trevor and Lesley's. Examples: Trevor's and Lesley's houses are on this block. Trevor and Lesley's house is on this block.
It is me........Trevor Presley
Trevor Bookers email address is Trevor Booker at 35_Fitz.com.
Trevor Ames's birth name is Trevor Isaac Ames.
Trevor Lerner is 5' 10".
Trevor Benoit's birth name is Trevor Dylan Benoit.
Trevor Powles's birth name is Trevor James Powles.
Trevor Pinnock's birth name is Trevor David Pinnock.
Trevor Nunn's birth name is Trevor Robert Nunn.
Trevor Sorbie's birth name is Trevor John Sorbie.