The surname would normally just use an S to form the plural. But names that end in S, or that would be confused with those that end in S, add ES.
The plural way to spell studio is studios.
The plural is resources.
The plural is cantaloupes.
The plural is hooves.
The plural is cherries.
The plural is roses.
The plural is "emeralds."
The plural is bridges.
The plural is "recesses".
The plural of "roar" is "roars".
The plural of "frill" is "frills".
The plural is lullabies.