Thomas Died between Feb 1832 (when he married Rachel at Bury) and Feb 1834 (when son William was baptised at Bolton)
There is only one close match, which means he died 3 weeks after their marriage.
Name: Thomas Rostron Death Date: 14 Mar 1832 Cemetery: Emmanuel Churchyard Burial or Cremation Place: Holcombe, Bury, Greater Manchester Has Bio?: N URL: https://www.findagrave.com/memorial/234678149/thomas-rostron
Probably born close to Robert, who was a marriage witness, but before the siblinge that were baptised (i.e. before 1808)
Death Notes
Rachel is missing in 1841. 1839-41 there are three Rachel "ENTWISLE" deaths in Darwen but ages are 81, 1 and 0.
Name: Rachel Entwisle Age: 54 Birth Date: abt 1806 Burial Date: 7 Jan 1860 Burial Place: Turton, St Anne, Lancashire, England Reference Number: GB127.L98/1/5/3 Abode: Edgworth This was the farmers daughter, single, aged 45 in 1851 of William Entwisle of Martins, Edgworth, unless she was a dau-in-law.
Name: William Rosthorn Baptism Date: 23 Feb 1834 Baptism Place: Bolton-le-Moors, St Peter, Lancashire, England Father: Thomas Rosthorn Mother: Rachel Rosthorn Reference Number: L243/1/3/11
Abode: Great Bolton. Widow (i.e. Thomas father deceased)