Over time, the surname Trappo has undergone some changes in its spelling or pronunciation.
It is common to find surnames similar to Trappo. This is because many times the surname Trappo has undergone mutations.
Discerning whether the surname Trappo or any of the surnames similar to Trappo came first is not always easy. There are many reasons that could have led to the surname Trappo being written or pronounced differently, giving rise to a new, different surname Trappo with a common root.