It can be both:
the Irish is Kane or Kean(e) from Ó Catháin or Ó Céin
the Scottish is Kean from MacIain.
It could also be a shortened form of McKean/McKane found in some parts of Ulster.
First found in County Londonderry, the Irish surname "Keane" appears in it's Gaelic form as "O Cathain" or "Mac Cathain". While the meaning of this surname remains unbeknownst to me, the family motto is: "A stroked cat is gentle".
Scotch-Irish
No, it is not of Irish origin. It is mostly an English surname, but occassionally a Scottish surname as well.
The 'Scotch-Irish' are the Protestants planted in North Ireland by the British in the early 1600s. They were of Scottish Lowland origin. The term came about in the U.S.to distinguish them from the native Catholic Irish.
It's a Jewish surname.
First found in County Londonderry, the Irish surname "Keane" appears in it's Gaelic form as "O Cathain" or "Mac Cathain". While the meaning of this surname remains unbeknownst to me, the family motto is: "A stroked cat is gentle".
This is the Anglicized version of a Scotch or Irish name which means "Son of the servant of St. Faolain"
what di the scotch -irish homes look like
Nationality of the last name Keane is Irish.
A Scotch-Irish are the people living in Ireland or Britain sharing a similar ancestry.
Roy Keane and Robbie Keane are both Irish soccer players. It does not appear that they are friends because Roy Keane has criticized Robbie Keane in the media.
There are many celebrations and festivals for those of the Scotch-Irish background. These include Christmas and Easter celebrations along with specific Scotch-Irish festivals called Heritage festivals.
Robbie Keane
Robbie Keane is an Irish footballer. This means that he is an Irish soccer player. He not only plays for the Irish national football team, but also for the Los Angeles Galaxy, a professional soccer team.
Scotch-Irish
No, it is not of Irish origin. It is mostly an English surname, but occassionally a Scottish surname as well.
Robbie Keane Roy Keane Shay Given Pretty Much the Whole Irish Team