Mac Cranny. Gaelic Irish / Mheic Bhranaigh in Co. Armagh and Co. Down in the south - east of the Ulster Province where Mac Crany and Mac Creaney are used as synonyms.

Mac Crary or Mac Creary - Irish / Mheic Ruaidhri. Origins unknown as yet. Could be a Mac Rory, which see, variant.

O Craughwell - Irish / Ua Creachmhaoil. A Sept / Family branch, who had their territory in the east of Co. Galway in Southern Connacht.

O Cravane or O Craven or O Creavan - Irish / Ua Crabhain. A Sept / Family branch, who had their territory in Co. Galway in Southern Connacht.

Mac Cravane or Mac Craven or Mac Creavan - Irish / Mheic Crabhain. A Sept / Family branch, who had their territory in Co. Monaghan in Southern Ulster and nearby in Co. Louth in the north - east of Northern Leinster.

Crawford. They were in Co. Antrim in the north - east of the Ulster Province.

Mac Crawley - Irish / Mheic Raghailligh. A Sept / Family branch, who had their territory in the Heremonian Ui Cobhthaigh Dal Cuinn 3 Colla kingdom of Orghialla / Airghialla / Oriel in Southern Ulster and nearby in Co. Louth in the north - east of Northern Leinster.

Mac Crea or Mac Crae or Mac Cray. Highland Scottish origins. Gaelic Irish / Mheic Raith / Craith in the Ulster Province. Similar to Mac Grath.

Mac Cready - Irish /  Mheic Riada. An Erenagh Sept / Family branch, who had their territory in the Barony of Raphoe in Co. Donegal in the north - west of the Ulster Province. Used also as a variation for Mac Conready, which see, Irish / Mheic Conriada, a variation of Mac Aready, which see, in Co. Derry in the north - east of Ulster.

O Creagh - Irish / Ua Craobhach - craobh (branch). Heberian Dal gCais Sept / Family branch,  who were a Sept of the O Neills/ O Nihills of Co. Clare, which see, in the north - west of  Tuaiscert Mhumhain / Thomond / Northern Munster who had their territory nearby in Co. Limerick in the mid - north - west of Thomond, but were also nearby in Co. Kerry and Co. Cork in Desmond / Southern Munster. Ancestors: 102.Niall, 101.Ionnrachtach, 100.Toole / Tuathal, 99.Flann, 98.Iorchlosach, 97.Connelly / Congalach, 96.Aodh Caomh the King of Munster, 95.Conall, 94.Eochy / Eochaidh Baill Dearg, 93.Cairthenn Fionn  Oge Mor, 92.Blood / Blod (Ui Bloid), 91.Cas the King of Thomond (Dal gCais), 85.Cormac Cass the 2nd King of Munster, 84.Ailill / Oilioll Oluimm the 1st King of Munster.

Creamer or Cramer - creamer / peddler. English origins used for Mac Creanor, which see, a variant of Trainor, which see, in Co. Leitrim in Northern Connacht.

O Crean or O Crane of Co. Mayo / Co. Sligo.  / Irish / Ua Creain. Heremonian Dal Cuinn "northern" Ui Niaill Cenel nEogain Sept / Family branch.  Ancestors: *89.Eochy Mugmedon the 124th King of Tara / Ireland the father of *90.Niall - of the Nine Hostages the 126th King of Ireland the father of 91.Eoghan (Cenel nEogain) the father of 92.Murray / Muireadach the father of 93.Maoin who was a brother to *93.Murtough / Muirchertach Mor Earca the 131st King of Ireland and 93.Fergus Mac Earca the King of Dal Riada, 93.Maoin was the father of 94,Colman / Columhan, the father of 95.Faelan the father of 96.Endadaidh the father of 97.Fionnbeartach the ancestor of the Mulvihills and the father of 97.Scralagh Tenelach the father of 98.Crean the direct male line ancestor of the O Creans / Ui Creain and the father of 99.Gairmliach the father of 100.Donnell the father of 101.Crean Oge - the Younger the father of 102.Lochlan the father of 103.Dalbach the father of 104.Maoldun the father of 105.Maol Maodhog the father of 106.Cath Maol the father of 107.Gairmliach the direct male line ancestor of the O Gormleys / O Grimleys / Ui Gairmliacha and the father of 108.Mac Caith the father of 109.Meanmnach the direct male line ancestor of the Mac Menamins / Ui Mac Meanman and the father of 110.Connor who had a younger brother, 110.Donnell the ancestor of the O Grimleys. 110.Connor was the father of 111.Dermod the father of 112.Brian the father of 113.Ferghal the father of 114.Aodh the father of 115.Manus the father of 116.Patrick the father of 117.Donell the father of 118.Manus, who had a brother 118.Richard and was the father of 119.Eoghan the father of 120.John the father of 121,Andrew the father of 122.John O Crean.

O Crean or O Creaghan or O Crehan of Co. Donegal - Irish / Ua Croidheain - croidhe / heart. Heremonian Dal Cuinn "northern" Ui Niaill Cenel nEogain Cenel Moen Sept / Family branch, who had their territory at Magh Itha, in Raphoe in Co. Donegal in the north - west of the Ulster Province and were Chiefs in Co. Sligo nearby in the north - west of the Connacht  Province and kinsmen to the O Gormleys / Ui Gairmleadhaigh. O Crehan used in Co. Clare in the north - west of Thomond / Northern Munster and nearby in Co. Galway in Southern Connacht. Ancestors: *90.Niall - of the Nine Hostages the 126th King of Tara / Ireland (Ui Niaill). 91.Eogan the 1st King of Aileach (Cenel nEogain), 92.Murray / Muireadach the 2nd King of Aileach, 93.Maein / Maoin,

Mac Creed or Mac Creedon - Irish / Mheic Criodain. A Sept / Family branch who had their territory in Co. Cork in Des Mhumhain / Desmond / Southern Munster.

O Creegan or O Cregan - Irish / Ua Croidheagain - croidhe (heart). A Sept / Family branch who had their territory in the Connacht Province were it is also confused with Crehan. See also Crean.

O Creehan or O Creeghan or O Crehan - Irish / Ua Croidheain - croidhe (heart). Heremonian Dal Cuinn "northern" Ui Niaill Cenel nEogain Sept / Family branch who had their original territory in Co. Donegal in the north - west of the Ulster Province. One of their Septs migrated to the south nearby into Co. Sligo in the north - west of the Connacht Province. O Crehan was mostly used in Co. Clare in the north - west of Tuaiscert Mhumhain / Thomond / Northern Munster Province and nearby in Co. Galway in Southern Connacht. Ancestors: *90.Niall - of the Nine Hostages the 126th King of Tara / Ireland (Ui Niall). 91.Eogan the 1st King of Aileach (Cenel nEogain), See also O Crean.

O Creehan or O Creeghan or O Crehan - Irish / Ua Criochain - originally Mac Criochain. A Sept / Family branch who had their territory at Ardstraw in the Ulster Province. See also Curreen.

O Creehan or O Creeghan or O Crehan - Irish / Ua Criochain. Used for O Creen or O Crean, which see, in Co. Kerry in the south - west of Des Mhumhain / Desmond / Southern Munster.

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