I'm unclear about the above subject. Is Cataluna a region like---the Southwestern United States or a specific area equivilient to one of the US States? Is a province?

I know a certain Ysidro Obiols was born in Cataluna province of Loredo (possibly mispelling) in 1820's. I'm trying to find our where that is. Can someone direct me to an area of a Spain map that that region is located. I'm looking and can't find anything close other than Lerida.

thanks for any help with this,

Joseph Puentes