1) English boy name 
Trevyn is an English name for boys. The meaning is `fair town` The name Trevyn is -as far as we know- only given to American boys. The name sounds like: Trevon, Treven, Trevan Similar names are: Tevyn, Arvyn, Devyn, Ervyn, Irvyn, Teryn, Tevin, Tevon, Teven, Tevan, Travys, Travon, Trevonn, Trevion, Trevian, Trevis, Trevor, Trever, Trevar