Sidney (often shortened to Sid) is an English given name deriving from the surname, itself of two different derivations depending on the origins of the family. In some cases a place name, itself from Old English, meaning "wide water meadow", and in others from the French place name "St. Denis".[1]
Sidney became widely used as a given name in English-speaking countries during the 19th century. It was popularised in the United States after the American Revolution due to admiration for the English politician Algernon Sidney as a martyr to royal tyranny;[2] since its peak in the 1910s its usage has declined steadily. From the early 1990s to the 2000s, the name Sidney has become a fashionable name given to girls. Sydney is also a spelling variant of the name whatever the gender; other variants include Cydney and Cidney for a girl.