Biblical name, borne by the mother of the prophet Samuel (1 Samuel 1:2), Hebrew Hanna. It is derived from a Hebrew word meaning ‘He (i.e. God) has favoured me (i.e. with a child)’. See also Anne. This form of the name was taken up as a given name by the Puritans in the 16th and 17th centuries and remained popular until the late 19th century. Thereafter it fell somewhat from favour but has enjoyed a massive revival since the 1990s.
Probably an altered form of the English habitational name Congreve (or the variants Congreave, Congrave) from Congreve in Staffordshire or Congreave in Derbyshire. The first is recorded in Domesday Book as Comegrave ‘grove (Old English grǣfe) in a valley (Old English cumb)’.