Marguerite f
French form of MARGARET (SEE Margaret), also used in the English-speaking world, where its use has been reinforced by the fact that the name was adopted in the 19th century for a garden flower, a large cultivated variety of daisy. Margaret was earlier used in English as a dialect word denoting the ox-eye daisy, and the French equivalent was borrowed into English just in time to catch the vogue for deriving female given names from vocabulary words denoting flowers. See also DAISY (SEE Daisy).
First names dictionary. 2012.