Sylvan m English
Either a variant of Silvanus
or directly from the Latin word silva
meaning "wood, forest"
Sylvester m English, German, Danish
Medieval variant of Silvester
. This is currently the usual English spelling of the name. A famous bearer is the American actor Sylvester Stallone (1946-).
Szabolcs m Hungarian
Meaning unknown, possibly from a Slavic word meaning "marten"
. It was borne by a leader of the Magyars at the time of Árpád
. This is now the name of a region in Hungary.