The usual modern spelling of Margery. It seems to have arisen as the result of folk etymological association of the name with that of the herb marjoram (compare Rosemary). This word is of uncertain origin; its Middle English and Old French form was majorane, without the first -r-.
Irish: Anglicized form of Gaelic Mac Mathghamhna, a patronymic from the byname Mathghamhain meaning ‘good calf’. This was the name of two (unrelated) chieftain families in counties Clare and Monaghan. In northern Ireland it is sometimes Anglicized as Matthews, since Matha was the Irish form of the Biblical name.