Living with widowed John Lockwood senior in 1871 there is a Sarah Machin. I think she is the mother of John Lockwood born 1865.
John Lockwood b.1823-the father- has older children.
William, Sarah A, Thomas and Elizabeth. Their mother was Ann Burchby.
Ann Lockwood nee Burchby probably died Mar 1863 Rotherham 9c 321
Hope this helps
Sue
I think this is the burial of the Ann Lockwood you found.
Ann Lockwood aged 40yrs,of Sandbeck, buried at Letwell 1 February 1863.
(Letwell is not far from Dinnington).
Henry Lockwood Machin, bap 30 Sep 1873 at St. Simon, Eyre St.
Mother - Sarah of 10 court Porter Street.
Is it possible that Ann Lockwood died after giving birth to John and that John was not baptised until the following year? The six year gap seem rather a long time between John baptised in 1864 and Henry Lockwood Machin born in 1870.