"Blend of Trevor and Vaughn"
The name Trevaughn is commonly a male name from the "American" origin.
Trevaughn is a modern American formation that combines the sounds of Trevor and Vaughn, using the Tre- opening also found in American names such as Tremaine and Trevon. It has no recorded history before it first appears in United States birth records in 1986, which points to a twentieth-century creation rather than an inherited name from an older naming tradition.
The pronunciation of Trevaughn is tre-VAWN.