You would use the apostrophe because it is possessive. Gavin and Jedine's Wedding
Walked is the verb in the sentence, "Damien and Gavin walked to school in the rain."
The bully in the book Loser by Jerry Spinelli is Gavin.
Alliteration means using the same sound repeatedly, so here are a couple I just came up with: Going to Godmother Gretel's grotto, Gavin gave Grant a goose. Gary's great gourd got gobbled graciously. Here are some examples from popular culture: Goodness, gracious, great balls of fire. Anne of Green Gables The grass grows greener on the other side.
"Gavin" is spelled G-A-V-I-N.
Ben Gavin's birth name is Benjamin Hogan Gavin.
Gavin Hetherington's birth name is Gavin Scott Hetherington.
Gavin Scobie has written: 'Gavin Scobie'
Gavin Danker's birth name is Gavin Danker.
Gavin Maloof's birth name is Gavin Patrick Maloof.
Gavin Lyall's birth name is Gavin Tudor Lyall.
Gavin Sims's birth name is Gavin Andrew Sims.
Gavin Salkeld's birth name is Gavin John Salkeld.
Gavin Rossdale's birth name is Gavin McGregor Rossdale.
Gavin Koon's birth name is Gavin John Koon.
Gavin DeGraw's birth name is Gavin Shane DeGraw.