Sarah Ann THOMAS B. 1873. Abertillery (General)
1871 Abertillery
Edmund Price 49
Sarah Price 47
Ann Price 19 Tin plate worker
Edmund Price 18
Samuel Price 11
John E Price 5
There are several Sarah Ann's born in that period so narrowing down the correct birth record to order is tricky.
She is living next door to Thomas and Ann in 1881, so I suspect she is their daughter , perhaps the parents house was too small for the family.
My guess is she marries and that is why you cannot spot her in later census data.
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Ἀριστοτέλης A Gloster & Hereford Boy in the Forest of Dean ><((((*>