"Blend of Trey and Shawn"
The name Treyshawn is commonly a male name.
Treyshawn is a modern American formation that combines the given name Trey with Shawn, or joins Trey to the -shawn ending also found in names such as Keshawn and Daeshawn. Trey began as an English nickname for a third child or for a bearer of a family name containing the element for three, and Shawn is an English spelling of the Irish Sean. The name first appears in United States birth records in 1993, which fits a late twentieth century American coinage rather than an older traditional name.
The pronunciation of Treyshawn is tray-SHAWN.