Tonks Family Genealogy Forum
If I got this right, Jonathan TONKS and Maria LLOYD had Hannah TONKS in 1871.
Thomas W. TONKS and Ann LLOYD were having babies from about 1836 to about 1846.
So it would seem the couples were bearing children about 30 years apart. That doesn't strongly suggest that Jonathan and Thomas were brothers or that Maria and Ann were sisters. Although it is possible, it's just not likely.
Go to my Lost TONKS page at http://people.ne.mediaone.net/tandem/Tonks.htm and see if anything there looks familiar. If you would like me to list your TONKS family there, just send me the relevant data.