This is a great way to start. I went from there to the local libraries to get more complete data (a lot of undocumented junk online). You can send away for naturalization records and stuff pretty easily (and not too costly). Take what you find at ancestry.com with a grain of salt (unless you pay to view the original documents) - and back up the research yourself. Sometimes these mistakes have been copied and pasted so many times and people take them as gospel - and they ARE NOT the facts!

Part of my family came from Poland to the US in the early 1900's - and as you can imagine the world at that time...lots of name changes going on to sound like something else. I have hit so many brick walls!!!

Best of luck with your search. It's nice to know what your family had to go through to ensure your place in this world.