Who are the Irish Travelers? Where did they originate?

[Sikeliot]

I have heard they are not Roma Gypsies and have no South Asian DNA, but are instead Irish who were made homeless by Oliver Cromwell's conquest of Ireland and simply carried on a nomadic lifestyle since.

Which is true?

[Grace O'Malley]

We know they are Irish. There has been a recent study done on them.

[Sikeliot]

We know they are Irish. There has been a recent study done on them.

Do they have British and Norse admixture or did they avoid it?

[KMack]

Irish are a different animal. A better understanding
https://www.amazon.com/Ireland-Novel-Frank-Delaney/dp/0061244430/ref=sr_1_1?ie=UTF8&qid=1525659948&sr=8-1&keywords=ireland+by+frank+delaney

[Bobby Martnen]

They're essentially Irishmen who were displaced by Cromwell and then got lost in the woods.

They may have diverged a little, because of a genetic bottleneck.

But there's no relation to Gypsies.