When Margaret Manning was born on 16 October 1748, in Charlestown, Middlesex, Massachusetts, United States, her father, Thomas Manning, was 26 and her mother, Sarah Wood, was 25.
Irish (Cork and Kerry): adopted as an English equivalent of Gaelic Ó Mainnín ‘descendant of Mainnín’, probably an assimilated form of Mainchín, a diminutive of manach ‘monk’. This is the name of a chieftain family in Connacht. It is sometimes pronounced Ó Maingín and Anglicized as Mangan .
English: from a Middle English survival of the Old English personal name Manning.
North German and Dutch: habitational name from a farm so named, once in possession of a certain Manno (see Mann 2) and his kin.