Thank you for your responses and the suggestions.
I have made fairly good progress on Elisabeth Veitch - having found , ordered and received her birth certificate, her marriage to Henry Storey, as well as her death certificate.
Elisabeth was born March 28, 1851 , Beaumont Hill, Paston, Kirknewton Parish, Northumberland co, the daughter of James Vaitch and Mary Vaitch formerly Ewart. Interestingly on the 1851 census for same, I found the family but Elizabeth was listed as Mary....the family was listed as LEITCH. Mary is listed as 1 month of age on the census. My suspicion is that when the census was taken, the newborn had not yet been named as there was one month between her birth on Mar 28 and the registration of her birth on Apr 28...
I also have found the family in each census up to and including the 1911 census. The death of Mary Vaitch (Elizabeth's mother) aligns to the 1861 census which shows James as widower - Mary died in 1858)
Elizabeth was married to Henry Storey on Oct 14, 1876 - both were listed as age 25. Henry's occupation was listed as Mason. Both from Morpeth. Henry's father was listed as George. Elizabeth's father as James. Oddly though, ELizabeth's father, James is listed as a Farm Labourer (deceased).
Witnesses to the marriage were Margaret Purdy and MaryAnn Botter (sp?)
I also have the death certificates for both of Elizabeth's parents - Mary Vaitch died aged 51 years on June 27, 1858 - she is listed as wife of James Vaitch, farm labourer. James Vaitch listed as present at the death, in Roseden.
Elizabeth's father, James, died July 9, 1880, Barnes Cottages, Westoe. Aged 77 years, occupation listed as husbandman. James Veitch, his son, is listed as in attendance at the death.
Elizabeth Storey's death occurred Oct 12, 1917 at 12 Dacre Square, Morpeth UD. She was listed as 63 years of age and the 'wife of Henry Storey a Gamekeeper'. Present at the death was Henrietta McLevy, daughter.
So while I am quite confident I have Elizabeth identified, I am still trying to understand why Margaret Purdy took Edith Annie Veitch in.
I have discovered that Henry Storey's uncle, Robert Storey, married an Isabella Robson. It appears though that she does not have an immediate/close connection to Margeret Purdy (who was born Margaret Robson).
Lastly, I do have the marriage certificate for John Purdy and Margaret Robson. Witnesses as her father, Robert Robson and her sister, Annabella Arkless.
Sorry to send such a long note but wanted to share this in hopes it might spark an idea or suggestion.I truly appreciate all the thoughts/ideas.
Kind regards
Bob