John,
from my quick perusal, I'd recommend she be Ellen Unknown with Aston in other last names and a summary of the issue under == Disputed Origins == at the top of the narrative. She should be detached from Thomas and Bridget (but links to them included in the disputed origins section, which should also include a link to the other speculative parent if such a profile exists.
Thanks for your continued effort to make these links and lineages accurate.