Hi Karytay,
So .. the marriage cert was sent for yesterday? That is good to hear. Hopefully you might be able to post what it says on here soon. It would be a long shot but I wonder if a witness might be called Annie and possibly David's Mother.
Millietay, I think David's Mother may really have the maiden surname of Reed which was put down for both her children. However, I suppose anything could be possible.
I think it might be quite difficult to establish this Annie.
A search of Annies/Anns at Heaton Cemetery during 1905 and 1911 and trying to find a match for a Cecil address might be one option but very time consuming without a database. Probably a paid search would be required with no guarantees.
If Annie returned to a 'husband ' it would be unlikely that any death notice/memoriam would reference either Cecil, or the two sons.
A long shot again but I wonder if Cecil may have gone back to Scotland to marry Annie and that may be why no marriage appears in this country?
I think Benjamin Reed's daughter may still be in the running. If there were any photos available out there of David and Annie Reed/Weedon's son your friend might be able to compare for similarities.
I once searched for my Great Grandmother who had moved to another area after the illegitimate birth of my Grandmother. To cut a long story short another most kind descendant answered my appeal, let me know the part of the story I did not know and sent photos. One of the photos showed such a resemblance to my own Mother I was almost blown away by the likeness - I would have recognised that face anywhere!
By the way this site does not show that there is a death notice of Elizabeth Ann Thomson in the newspaper but there definitely is one!
https://www.genuki.org.uk/big/eng/NBL/DeathNotices/deaths_TEAGI suppose probably just a small over sight. I think we all certainly owe a debt of thanks to the person who did all the work on this site. I know it has been very helpful to me and many others.