However, with Mary E, you have her details of her birth in 1864 in Ireland -
https://familysearch.org/ark:/61903/1:1:FRHP-SHJ Have you been able to find Mary E and her American family in the censuses from 1900 to see whether what she said on every census up to her death?
Just going to add some of the old posts here so that we can hopefully work through them and try and link the info, if that is OK:
2010 -
www.rootschat.com/forum/index.php?topic=497848.0 ... start of your searches for Sarah M
2011 -
www.rootschat.com/forum/index.php?topic=513894.0 ... trying to link to Scotland
2012 -
www.rootschat.com/forum/index.php?topic=623848.0 ... in Macosquin, Derry, trying to link to possible sister for Sarah M
2012 -
www.rootschat.com/forum/index.php?topic=613764.0 ...in the US
Doire, you have had such a long old complicated search for Sarah Margaret's origins
Still not there though are you. So many clues in there, but so far they do not all connect do they.
Great discovery of Sarah M's son going off to the US in 1923 to his uncle, letting you connect back to a likely sister Mary.
Have to admit, I am not yet understanding where the surname WALTON comes in. I wouldn't necessarily say that Sarah Pollock married a Walton. She could have been illegitimate and then swapped around surnames for example. Can't see any further clues from 1911 for her (from the other post, as included by aghadowey here
www.census.nationalarchives.ie/pages/1911/Londonderry/Coleraine/Bushmills_Road/589336 ) 1901 still has not been found I understand?
Robert James McSheffrey gave 10 James Street, Coleraine when he returned from the US in 1925.
Monica