I think that this could be the (rather complicated) situation, in outline ....
Ann Gething married William Henry Hand on 22nd March 1889 at St Peter, Swinton. He was a widower, aged 28. She was a spinster aged 21. Their respective fathers were James Hand (Shoemaker) and James Gething (Collier).
Ann was born c1868, at Heath Town, Wolverhampton, Staffordshire and she can be readily seen on the 1881 census with her family. William Henry Hand was born c1859 at Ladymoor, Ettingshall, Staffordshire. His mother was called Hannah. Ann’s mother was called Ellen.
William Henry and Ann Hand can be seen on the 1891 census at reference RG12/3209/36/19 with their first two children William James and Samson (who has been listed as Simeon - he died soon after the census was taken). Also living with them, at 14 Spencer St, Pendlebury, is William’s brother, Philistine Hand (also from Ladymoor, Ettingshall).
On the 1901 census they appear at RG13/3720/172/35 with other children called Thomas, Annie, Edward and Ellen Hand.
At some point between 1901 and 1911, William and Ann parted company. In that period she had more children, Florence Hand, Samuel Hand, Sarah Ellen Hand and Emmanuel Davies. That is how their births are registered. The father of Emmanuel was Thomas Davies (who she did not marry). The father of Florence was probably William but it is uncertain who fathered Samuel and Sarah Ellen without seeing the birth records.
The most likely birth registrations seem to be 1904 (Q1) Barnsley 9c 199 - Samuel Hand and 1905 (Q2) Doncaster 9c 870 - Sarah Ellen Hand.
On the 1911 census, Thomas Davies (as you already know) is with Sarah Ellen and Emmanuel. It is not permitted to provide the 1911 census details here, you will need to find them yourself but by way of guidance, William is living with his widowed mother, Hannah plus Ellen and Florence in Pendlebury. I think Ann is with her son, Sam, in Pontefract. In each case, their details are not strictly in accordance with previous facts. Some of William and Ann’s other children can also be found in 1911 - not living with either parent.
Have a look and see what you think.
GF