I am so sorry I haven't been in touch sooner. I never received a notification of a posting its only because I was browsing through the forum that I saw your reply.
Sarah didn't marry a Swindell. (I got new glasses) she married Jeremiah Lownds/Lowends.Thomas did die in 1838 and she married in 1839. Hannah is on the 1841 census with her mother and her father is definately Thomas (from marriage cert). I have the parish records for Wetton on fiche and on the Marriage cert of Sarah Allcock and Geremiah Lownds Sarah's father is stated as Thomas Wood. And that Sarah is a widow at time of marriage.
Thomas Allcock married Sarah Wood 19 Feb 1816 in St Margarets Wetton and they had at least 9 children although a lot died as children.
I would loveto hear from you. Please email me at firstname.lastname@example.org