McCormick (surname) the deaths of several prominent MacCormicks of County Fermanagh; the last of these died in 1431. Another possible derivation of the name is that it comes from the gaelic "Mac Cormaic" which comes from "corb" and "mac" meaning "Ravenson". Scottish and Irish patronymic surnames frequently have the prefix Mac or Mc. When these surnames were originally developed, they were formed by adding the Gaelic word, mac, which means son of, to the name of the original bearer's father, or to the father's trade. Patrick C. McCormick 1979-1983 Cobra Gunship Pilot 1/17th 82nd Airborne McCormick (surname) McCormick is a family name
McKinley (surname) nickname given the deposed MacDunleavy dynasty royals while exiled in Tirconnell and elsewhere. Being, also, one of Ireland's ancient hereditary medical families, the MacDunleavy (variant English spelling MacDonlevy) were in Tirconnell accorded the high Gaelic status of "ollahm leighis" or the official physicians to the O'Donnell clan in County Donegal and practiced as physicians while exiled in Argyll, Scotland. The nickname was Mac an Leigh. Per this scenario the Gaelic language patronymic forming prefix "Mac" (meaning "descended of") is joined to the Gaelic language "Léigh" meaning leech, but denoting a physician. Leeching (medical) having been for millennia, in Gaelic Ireland