Wide island or south of the island
A modern spelling variation of Sydney, which originated as an English surname derived from a place name. It likely stems from the Old English words 'sid' meaning wide and 'eg' meaning island, or as a contraction of Saint Denis.
Less common today
Sydnye isn't in the latest US Top 1000. It last peaked at #9,598 in 1997.
US births per 5-year period, 1990βpresent (SSA data).