Family notesindicate John's birthplace is the "Old Swan Inn." However, his son's obituary indicates it as the "Old Severn Inn." . Note -- there is a Swan Inn today in Walton-on-Trent, so that's probably it, but maybe verify how long it has been there?
Baptized Jan. 31, 1813. St. Laurence Walton-on-Trent. TODO - Find source
John and Sarah were married August 3, 1841 at the parish church in Burton on Trent. John's residence at the time was given as "St. Mary's Lancaster" and Sarah's was "Burton." 
Interestingly enough I have found a John Yates, profession of "Tailor" in the 1841 census in Lancaster on Chapel Street. . Is this the same John Yates? There is nobody else of the same name on that census sheet. Looks like a rooming house perhaps?
There is also the old notebook passed down through the family with the legend on the cover "Jno Yates - Broughton Hunt of Broughton." (see this page). Have not as yet found any records of him living in Broughton.
Per the 1851 England Census, that year, the entire family was living at 66 Jermyn Street: Father John, Mother Sarah, Daughter Sarah, John Mousley, William Henry, Catherine E., and a relative, Catherine Mousley, "governess" (probably a sister of Sarah Mousley Yates).
John Yates' occupation was given as "Tailor / Master employing 6 men" 
There is a business card attached to this profile which indicates that when he was at the 66 Jermyn Street he had a Royal Warrant from the Queen, i.e. he supplied goods to the royal household and was allowed to say so publicly. In 2018 a researcher examined the royal archives and was not able to verify this. See details
on this page
John Yates and his wife both died in 1857 and are buried in common graves in Brompton Cemetery, London. 
Handwritten family history notes, source unknown
↑ 4.04.1 Class: HO107; Piece: 553; Book: 2; Civil Parish: Lancaster; County: Lancashire; Enumeration District: 1a; Folio: 23; Page: 41; Line: 1; GSU roll: 306936 Description Enumeration District : 1a Source InformationAncestry.com. 1841 England Census [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc, 2010. Original data: Census Returns of England and Wales, 1841. Kew, Surrey, England: The National Archives of the UK (TNA): Public Record Office (PRO), 1841.
↑ 5.05.1 Ancestry.com. 1851 England Census [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2005. Original data: Census Returns of England and Wales, 1851. Kew, Surrey, England: The National Archives of the UK (TNA): Public Record Office (PRO), 1851.
↑ 6.06.1 Register of Burials in the West of London and Westminster Cemetery, Earl's Court, Old Brompton. See scan
It may be possible to confirm family relationships with John by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with John: