Wide island or south of the water
A modern spelling variant of Sidney or Sydney. It likely derives from the Old English words 'sid' meaning wide and 'eg' meaning island, or as a contraction of Saint-Denis.
Less common today
Sidni isn't in the latest US Top 1000. It last peaked at #4,724 in 1995.
US births per 5-year period, 1990–present (SSA data).
