Variant spelling of May, possibly influenced by Maeve. It was borne by the American film actress Mae West (1892–1980), whose prominent bust led to her name being given, by members of the RAF, to a type of inflatable life jacket used in the Second World War. This spelling is not much used, except in compounds such as Ellie-Mae, Lily-Mae, and Daisy-Mae.
English: topographic name from Middle English dene ‘valley’ (Old English denu), or a habitational name from any of several places in various parts of England named Dean, Deane, or Deen from this word. In Scotland this is a habitational name from Den in Aberdeenshire or Dean in Ayrshire.