Might stick my two bob's worth in. Seems there is a little confusion as to the NAME, FOREST or FORREST. Unfortunately there are Swales, Swailes, Swalie, and Swaley in BOTH Names all over the shop.

But Potters, well they are a bit thinner on the ground.

1851 census TEESDALE.
Swale FOREST born 1803 YORKSHIRE Head
POTTERElizabeth FOREST Born 1826 Middleham YORKSHIRE WIFE
Swale DETH born 1849 Sunderland
Mary DETH born 1841 Northallerton
Mary DETH Born 1832 Gateshead POTTER
Lovinia DETH born 1847 Sunderland
Jane DETH born 1843 Northallerton
Francis DETH born 1826 Barnard Castle POTTER (SON)
and last but not least
Annias DETH born 1845 Sunderland
I don't think you can discount either FOREST or FORREST, depends who was writing it down and whether they asked the question.

Alice I believe is the daughter of Thomas and Elizabeth FORREST of YORK born 1846.
Neil