"Blend of La and Mario"
The name Lamario is commonly a male name from the "American" origin.
Lamario first appears in United States birth records in 1973. Its form matches the American pattern in which the prefix La- is attached to an existing given name, as in LaMar and LaDarius, with Mario as the base element. Mario is the Italian form of the Roman family name Marius, so the name is a La- prefix plus Mario rather than a name inherited intact from an older tradition.
The pronunciation of Lamario is luh-MAR-ee-oh.