It would seem that before 1869 Eliza had moved to Surrey with her husband Samson, leaving her child Harry Simpson to be brought up by her mother Elizabeth (Betsey) Simpson.
(The 1881 census shows Eliza & Samson living at Harveys Lane, Morrisons Lodge, Thorpe, Next Norwich, Norfolk with their family of seven children, the first three born at Caterham, Surrey & the last four born at Mulbarton, Norfolk)
Betsey was still living in Seamer in 1871. Her grandson Harry Simpson (born 1862) was living with her.
If anyone can add anything it would be much appreciated