Can you just clarify that the Jeremiah you think might have married Ann Green is the same Jeremiah that left the will of 1768, and that unmarried and childless means he was widowed and his two potential sons had predeceased him.
Yes, I'm pretty sure this is indeed the same man. I know that his son Thomas predeceased him as said child died in infancy (1733). I'm less sure about William, though as I'm not 100% sure that he is even the child of the same couple it may be irrelevant. We know that Jeremiah was widowed at the time of his death from his parish burial record in 1768. Ann Lovatt (formerly Green) was buried in Lapley, 1766.
With regards to
Thomas Lovatt Jr - d. 1780 (probate/admin.) - listed as 'formerly of Penkridge, but late of His Majesty's Frigate Surprise, a soldier'. Died on board. Administration granted to Thomas Lovatt the Elder, father.
We only have one Thomas,son of Thomas, that is Thomas born 1724 son of Thomas born 1685 who married Ann. Thomas senior being the brother of Jeremiah who left the will in 1768 referring to his late brother Thomas,so he must have died by 1768 and therefore can not be Thomas the Elder granted probate in 1780
Yes, I had a similar thought - we seem to have an extra pair of Thomases that we haven't yet placed in the tree.
I think the Penkridge branch of our Lovatts begins with Jeremiah Lovatt, son of Thomas and Margery (this is ignoring one Richard Levett buried in Penkridge in 1641 who may or may not be related). This elder Jeremiah seems to be the only one of Thomas and Margery's children that settles outside of Lapley (although only three or so miles east). He marries a Katharine Grateley in 1688.
I can find at least four children baptised to Jeremiah and Katherine: Thomas (died in infancy, 1689), Margaret (bap.1693), Jeremiah (bap. 1697) and Joseph Lovatt (bap. 1700). I'm not confident that this is the whole family as there are a number of Lovatt records which I can't place. For example: Alice Lovatt who marries a Robert Reanolds by license in Penkridge, 1721 (document signed by a Jeremiah Lovatt). She would be of the right age to be a potential child of Jeremiah and Katharine, but I can find no local baptismal record for her. Either there is a gap in the records somewhere or families are moving around.
There are a number of Lovatt baptisms with a Thomas listed as a father in Penkridge:
Abel Lovatt - son of Thomas Lovatt & Susannah Benton (1736)
Elizabeth Lovatt - daughter of Thomas Lovatt (no mother given) (1778)
Joseph Lovatt - son of Thomas Lovatt (no mother given) (1779)
Ann Lovatt - daughter of Thomas Lovatt (no mother given) (1783)
Joseph Lovatt - son of Thomas Lovatt (no mother given) (1785)
Hannah Lovatt - daughter of Thomas Lovatt (no mother given) (1788)
Sarah Lovatt - daughter of Thomas Lovatt (no mother given) (1790)
Thomas Lovatt - Joseph Lovatt - son of Thomas Lovatt (no mother given) (1793)
Now obviously the range of dated makes it fairly likely we're dealing with two separate series of children here (Abel being separate from the rest) but I post to show that there is at least one Thomas, possibly a series of them, in the Penkridge line of the family. How they fit into our tree isn't exactly clear, but my hunch is that they descend from Jeremiah and Katherine (being thus cousins to the Lapley branch of Lovatts descending through Thomas and Margery).
An interesting note on the military side of things. The Penkridge parish registers list a marriage on Dec 14th 1738 between 'George Washington of General Wade's Regiment and Elizabeth Lovatt, sojourner, at Stafford'. Given the later career of Thomas Lovatt (d. 1780), it makes me wonder if any more of the local Lovatts embarked on a military career.
With regards to Jeremiah's will mentioning his niece Mary Sansome, daughter of his late brother Thomas Lovatt. I have found a marriage record for Mary in Lapley, 1755 to John Sansome, she is 22 and John age 21, of Pattingham. Witnesses Thomas Lovatt ( possibly her brother) and Edward Sayer. Marriage is by Licence with consent of Parents, indicating her father (Thomas b 1685) is almost certainly alive which fits with the burial record of 1759
It's possible that Edward Sayer is some degree of cousin - Thomas' aunt Anne married a Samuel Sayer in 1681.