Need some help....

My great-great grandmother, Rachel Pears, was born around 1826 in Edgcott, Buckinghamshire, England and died around 1876 in Aston, Warwickshire, England.

I found her, before marriage, in the 1841 Census - Residence Waddesdon, Buckinghamshire, England - at 15 with no family with her.....

I would like to find her parents. Could anyone direct or help me???