I have recently obtained the marriage certificate for George Hack and Mary Ann Jenkinson, who married in England, and resided in Sacramento, California. A few bits of information:
They were married on May 18, 1844 in the Spittlegate Church of England (Spittlegate is now a part of Grantham). He was listed as an illiterate (he signed his name with his mark) labourer residing in Spittlegate, while Mary Ann Jenkinson was listed as a labourer resident of Denton. Both were listed as being of age, but no specific dates were given.
George's father is listed as being Thomas Hack, and Mary Ann's father is listed as being William Jenkinson. The witnesses for the marriage were William Jenkinson and Ann Tomlinson, although it is not clear exactly how these are related to George and Mary.
Spittlegate (also known as Spitalgate - short for Hospital Gate), appears to be an area of approximately one square mile on the southern side of Grantham, and although separate for much of the 19th century, is now apparently a part of Grantham. ------------
Also, on the 1841 England census, I found a Nathan Hack, aged 14 living in Harlaxton (about a mile from Denton and Woolsthorpe - all near Grantham), Lincoln, England, whom I believe to be a younger brother of George. He is listed as a shoemaker apprentice, and later shows up in upstate New York in Wayne County, with John Hack - whom I believe to be a third brother.
Just a couple of pages away was a 20 year old mary Ann Jenkinson (I believe with her younger brother William), who was listed as a servant in the house of an elderly clerk, Thomas Plunkett. I have not confirmed that this is our Mary Ann Jenkinson, but it appears to be a likely lead.
On the 1841 census, there were several Hack and Jenkinson families in the Grantham, Woolsthorpe, Little Ponton, Greater Ponton, Denton, Spittlegate, and Harlaxton areas that merit further attention in order to determine the history of these families - but this is likely to require a visit to England to do the research - or at least access to the UK 1841 census for a start. Woolsthorpe may be where both of the families originated.
Also, there is a Thomas Hack who apparently died in Grantham in the third quarter of of 1840, and a death certificate appears to be available. There is an Ann Hack listed as 45 years old in the 1841 census as a servant in Grantham, although it is not clear whether this might be our Ann.
Interestingly, on the LDS website, there is a George Hack listed as being christened in early 1820 as the son of Thomas Hack and Ann in Harlaxton, Lincoln, England. Although neither John nor Nathan are listed in the same family, there appear to be two daughters named Mary Buk Hack and Hannah Hack who were christened after George. It is not certain that this is the correct family, but it does appear likely to be at least closely related. ----------------
If anyone has any additional information of the Hacks and Jenkinsons of the Grantham area of Lincolshire, England. I would be grateful if you would share your knowledge.