Mag Dhorchaidh
Mag DHORCHAIDH, Mag DHORCHAIDHE—IV—Magorchie, M'Gorche, MacGourkey, MacGourty, MacGoorty, MacGorty; a variant of Mac Dhorcaidh, which see; the name of a family in Connacht who were formerly chiefs of Cinel Luachain, comprising the parish of Oughteragh, in the east of Co. Leitrim. The last chief of the name died, according to the Four Masters, in the year 1403, This appears to be the only form under which the surname survives.
Alphabetical Index to Irish Surnames