Not trying to be a party-pooper, but signing up for Ancestry.com can become expensive. As much as I love watching 'Who Do You Think You Are', I feel that it is more or less an hour long commercial for Ancestry.
If you can go to your local library and access it that is good. But even better is to find your local Latter Day Saints Church, and find out if they have a 'Family History Center'. If they do, go there and they will gladly let you use their resources to search, and they have many portals, including Ancestry that you you can use.
For those at home, FamilySearch.org, is a free website and service, that is courtesy of the LDS Church. The problem with this site is that everything that is put online, is dependent on volunteers. They are currently working on uploading the 1940 Federal Census.
As always, do not necessarily trust whatever you find online, but use that as a starting point. Verify whatever you find with another source, if possible. For example, if Joe Smith died in Nebraska on June 6, 1930, verify that by requesting a death certificate from Nebraska's Bureau of Vital statistics.
I've done this type of work for years, and I have seen too many people get their hopes up only to have them dashed, because of poor research.
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Okay, I'm off my soapbox. This IS a fun thread. On my mother's side of the family, I have a line that goes back to Elder John Strong who came over to this country from England in 1620, on the ship, Mary and John. Through his many descendants--and there were MANY--I can trace relationships to Princess Diana, and the Bush family, among others.
For myself, my husband and I met in a cemetery...... :D