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| Gill | numerous: Connacht, Ulster and generally. Ir. Mac an Ghaill (Ghoill), son of the foreigner. A name adopted by the Stapletons. However, a number of sources are indicated: see MacGill and Magill. MIF & SGG. |
| Mac an Ghaill | Mac Gill, Stapleton: líonmhar san Oir-dheisceart mar Stapleton, Angla-Normannaigh a shocraigh i gCill Chainnigh agus ghlac an sloinne Gaelach sa chucu féin. |
| Mac Giolla | Mac Gill, Magill, Gill: líonmhar gach aird, Ulaidh agus Connachta ach go h-áirithe. Giorrú é seo ar sloinne éigin a thosaigh le Mac Giolla ... ach féach Mac an Gaill, leis. |
| MacGill | numerous: Ulster generally, Sligo-Roscommon etc. Ir. Mac Giolla, the proper name having been dropped in colloquial use. It also stands for Mac an Ghaill (son of the foreigner), a patronymic adopted by the Stapletons in the South East. See Magill. |
| Magill | numerous: Ulster generally, especially Antrim-Down. Ir. Mac an Ghoill, "son of the foreigner". Mac Giolla is also used, being an abbreviation of some name beginning with Mac Giolla .... SGG. |
Parishes where a Magel and a second surname married each other.