Sylvester

wiktionary

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Borrowed from Latin sylvester(“woody, rural”) from silva(“wood”); name of a saint whose feast day falls on December 31.

etymonline

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Sylvester

masc. proper name, from Latin silvestris, literally "of a wood, of a forest, woody, rural, pastoral," from silva "wood, forest" (see sylvan). St. Sylvester's Day is Dec. 31.