Hi all. Did a search on Nottingham Rushworths and picked up this thread, so joined up in order to reply.
Perhaps my current resaearch will help clarify...

The John Rushworth bap.12/4/1802 (same day as brother James), son to William & Martha and sibling to many others, was married to a Mary Jones (of Abergavenny) in 1825 in Bloomsbury (source: Pallot's index). Their first child was Mary Ann Rushworth (bap.7/4/1826, bur.9/4/1826, Nott St Mary). They subsequently moved back to Abergavenny where they had son Thomas (bap.19/4/1827, who also died), followed by another Thomas (bap.5/2/1829, who I think died too). Daughter Martha was bap.8/3/1832. In the cases of Thomas x2 & Martha, father John is described as joiner & cabinet maker. They lived in Toll St, then Mill St, Abergavenny. After that we find them again with John Alfred c.1835, Chelsea, Middlsex; Edwin James c.1838, Southwark, Surrey; Fanny c.1840, Surrey; William Henry, Lambeth, Surrey and Sarah Ann, b.31/1/1848, Southwark, Surrey. I got a copy of Sarah Ann's birth cert which specifies her father John, of Nottingham, as cabinet maker. Martha Rushworth, the oldest surviving child was one of my g.g. grandparents. I'd love to hear from Burto or any others who may have more info. I'm desperately trying to find where William, John's father came from. He and wife Martha (nee Betney) were married in Newark St Mary on 7/9/1791. Since the Rushworths seem to hail from Yorkshire, I'd love to trace William back to his roots.

Hope you find some of this info helpful.
For the record, I'd worked on the notion that the John Rushworth (bap.15/1/1827) in Nottingham in the 1841 census with sister Jane (bap.14/3/1830), was living with mum Sarah (nee Hart, widowed from Joseph Rushworth) who married Samuel Flinders (with George & Elizabeth Flinders). The record of Jane's parents as Sarah & John (joiner), is probably an error and should be father Joseph (joiner), making her the sister of John. Joseph was buried 16/11/1830 and Sarah married Samuel on 17/3/1832.
Jenny