district in southwest London, Chelchuthe (1300), Old English Chelchede (1086), Celchyth (789), Caelichyth (767), probably literally "chalk landing place," from Old English cealc "chalk" (see chalk (n.)) + hyth "landing place." Perhaps chalk or limestone was unloaded here from Chalk near Gravesend in Kent. Chelsea Hospital was founded 1680s by Charles II as a home for aged veterans.

As a fem. proper name, not in the top 1,000 names in U.S. until 1969, then in the top 100 among girls born 1984 to 1998, peaking at number 15 in 1992.