|Culligan||fairly numerous: mainly Clare-Limerick with some in Louth-Meath. Ir. Ó Cuilleagáin. The name also occurs as Quilligan and is a synonym of Colgan, q.v.MIF.|
|Ó Coilgin||Quilligan: féach Ó Cuileagáin & Ó Colgan.|
|Ó Cuileagáin||Quilligan, Culligan: cuíosach líonmhar: Luimneach-an Clár go sonrach, scata sa Mhí & Lú. Clann a bhí sa Chlár ón 17 céad ar a laghad. Ceapann de Bhulbh gur leagan caolaithe den sloinne Ó Colgan é, q.v.|
|Quilligan||mod.nos: Limerick etc. Ir. Ó Cuileagáin, a variant of Colgan, according to Woulfe. This name and its variant Culligan are associated with Clare. MIF.|
Parishes where Quilligan and a second surname are found together
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