* Diego: A Spanish masculine name, derived from the Greek name "Didymus" meaning "twin" or "double".
* Martin: A common masculine name of Latin origin, meaning "warlike" or "belonging to Mars".
So, "Diego Martin" is essentially a name meaning "Diego the warlike" or "Diego of Mars."
If you are referring to a specific place, "Diego Martin" is the name of a district in Trinidad and Tobago.