McGeachie (mag eacaro), MacGaugh (mag eacada), MacGeagh (mag eacada). McCaughan an Anglicized form of the Old Gaelic MacEachain, son of Eachain. An Ulster surname, recorded in the Counties of Antrim, Down, Londonderry and Tyrone. Some families of Mc Caughen changed their name to MacCaughey, itself an Anglicized form of the Ulster name Mac Eachaidh, son of the Horseman or Horse Lord. The Scots names MacGeachie and MacGeachy are also derived from Mag Eochaidh. McGachy, McGeachy. An anglicized version of the Gaelic 'Mac Eochaidh'. A surname in both Ulster and Scotland. William McGaheye settled in York, Virginia, in 1653, and Alexander McGeachy,
McAllen (surname) hereditary connections with the popular surname Allen. The noble family of this surname, from which a branch went to Portugal, is descended from one Alanus de Buckenhall. The U.S. city of McAllen, Texas was named after Scottish-American businessman John B McAllen. McAllen (surname) McAllen is an Scots Gaelic surname, originating from "MacAllen" in Scotland. Historically, the name has migrated to Ireland, where the prefix of the name has been commonly transposed with "Mc". The first recorded arrivals to Ireland bearing this name came in the 15th century to County Donegal, with the arrival of Gallowglas military families to support the