Arguably, under the old dispensation, they had the right to disposess the previous inhabitants by force of arms, and any squatters they might have found on their return. Many believe they still do, including a fair number of Baptists.

Do I have a right to return to Castile because Diego Rodriguez Porcel was Count there?

I do have the right to an Irish passport, but I am not entitled to evict the present proprietor of Loughmoe Court, or even the inhabitants of the meanest hovel.