See if your local library has a subscription to Ancestry. Some help may be needed to get on it, (like Me) but they seem to have pretty good coverage.
I was exposed to it at my library's senior computer class and I believe we
were told not every feature a computer program you buy personally is on it.
But a real boon to people who can't afford a full subscription or have their
own computer. As to name spellings-you will find families growing up in the same house occasionally using different spellings. Maybe a family
feud, maybe just no schooling, census misspellings because the taker was illiterate, just many reasons.