I stumbled on your site and may be able to get you some information about a bunch of Loftus folks mostly in the Pacific Northwest.
My understanding is that my great-grandfather came to Wisconsin from Norway. His name was Lofthus, but he dropped the “h” to make the name more “American”.
Anyway, there are a bunch of Loftus-types here in Oregon, Washington, and Alaska stemming from his family, and if you are interested, I may be able to get you a copy of our tree, which was put together several years ago by some of my relatives. The main family names involved in this tree include: Loftus, Younger, Roth, and Wiegert.
Toby A. Loftus