Colwyn
Colwyn is a boys name.
It is said cole win.
Colwyn comes from the Welsh Collwyn which means hazel grove.
Colwyn is the name of a river in northern Wales.
The Borough of Colwyn was one of six districts in Clwyd in Wales between 1974-1996.
Variants/Nicknames: Col, Cole,Wyn, Colwin.
Sources:
The Best Baby Name Book by Sue Nicholson.
http://www.behindthename.com/name/colwyn