Cecily is a given name, one of the English forms of Latin Cecilia. Notable people with the name include: Cecily Adams (1958–2004), American actress, casting director, and lyricist Cecily Bonville, 7th Baroness Harington (1460–1529), English peeress Cecily Brown (born 1969), British painter Cecily Lefort (1900–1945), British World War II agent Cecily Neville, Duchess of York (1415–1495), mother of two English kings Cecily Norden (1918–2011), South African author and equestrian Cecily Maude O'Connell (1884–1965) Australian trade unionist and religious social worker Cecily O'Neill, American theater educator Cecily Polson, Australian actress Cecily Sash (1924–2019), South African painter, professor Cecily Strong (born 1984), American actress and comedian Cecily Tynan (born 1969), Philadelphia broadcast personality Cecily of York (1469–1507), sister of King Edward V of England Cecily von Ziegesar (born 1970), American author of novels written for teenagers See also Cicely (disambiguation) English feminine given names