Sidney is an English given name derived directly from the English surname Sidney. The surname itself has two possible origins: it may be a place name from Old English, meaning "wide water meadow," or it may derive from the French place name St. Denis. As a given name, Sidney first came into use in honor of executed English politician Algernon Sidney (1622–1683), who was regarded as a martyr to royal tyranny. Another notable bearer of the surname was the poet and statesman Philip Sidney (1554–1586). Etymology and History The surname Sidney originates from the Old English elements sīd (wide) and ēg (island or water meadow), hence "wide water meadow." Alternatively, some families trace their name to the Norman place name Saint-Denis in France. The name appears in records as early as the 12th century, but its use as a first name surged in the 19th century, particularly in English-speaking countries, following admiration for Algernon Sidney. Gender and Popularity Historically, Sidney has been more common for boys than for girls. However, in the United States, the spelling Sydney became popular for girls starting in the 1990s, and as a consequence, the variant Sidney was used more often for girls than for boys between 1993 and 2019. The name peaked in popularity for American boys in the 1910s and has since declined steadily. Cultural Significance The name Sidney is associated with Algernon Sidney (1622–1683), a British politician and republican whose execution made him a symbol of resistance to tyranny. His posthumous reputation inspired the name's adoption, especially among American revolutionaries. The poet Philip Sidney also contributed to the surname's literary cachet. Notable Bearers Notable individuals named Sidney include the American filmmaker Sidney Lumet, the Australian actor Sidney Myers, and the English actress Sidney Browne (born 1850). Related names and Variants Variants of Sidney include Sydney, Cydney, and Cidney. The diminutive Sid is common. In Brazilian Portuguese, the form Sidnei is used. Meaning: Wide water meadow (from Old English) or from Saint-Denis (French) Origin: English surname Type: Unisex given name Usage Regions: English-speaking countries, especially United Kingdom and United States