Northern Lass wrote:so that Isaac with Elizabeth must belong to another Richard Priest
Yes, because Samuel Isaac is still with Jane in 1871:
1871 at Aston, Warwickshire
Samuel Isaac Prest Head 36 Engine Driver b. Boardsley Heath, Warwicksh.
Jane Prest Wife 37 b. Old Hill, Staffs.
Isaac Prest Son 7 School b. Aston Manor
Samuel Prest Son 5 School b. Aston Manor
Thomas Prest Son 3 b. Aston Manor
Ann Jane Prest Daur 6 Months b. Aston Manor
Margaret Kendrick Lodger 14