I searched through Ancestry.com and found the following: from 1920 Census: PA, Armstrong County, Brady Bend Twp. E.D. #9, sheet 8A Savilla, Paul - Age 46, immigration in 1895, naturalization in 1911 POB - Galicia, mother tongue - Polish, occupation - coal miner Savilla, Regina - age 38, immigration -1895, naturalization - 1911 POB - Galicia, mother tongue - Polish, occupation - none Children - all born in PA Anna - 16 Mary - 11 Celia - 9 Paul - 7 Rosie - 3-10/12 Frankie - 2-6/12 or 2-1/12 Enumerated on 10 Mar 1920
Went back to see if i could find Regina earlier.Couldn't find her in either PA or WV.But found this in 1900 in Ohio. 1900 Ohio, Cuyahoga, Cleveland Ward 5 E.D. #19, sheet 8 Haas, Ignatz- age 44,DOB Apr 1856, POB - Hungary, immigration - 1877, naturalized, dry good dealer Haas, Julia - age 41, DOB Apr 1859, POB - Hungary, immigration - 1879 Haas, Regina - age 14, DOB Aug 1885, POB Ohio Ignatz and Julia have apparently been married 20 years.
Some of this matches your earlier narrative.But some of it does not.