Hi there,
First of this is my first post on this site so it is nice to be able to help someone straight off.
I am a half grand nephew of Annie Binnie. Her father Richard was married three times she was one of 3 daughters in the first marriage I am descended from his 3rd marriage.
I can't give you much on the Purvis side of the family other than James and Annie were married in Jesmond parish church in the 4th quarter of 1914 in volume 10b page 93 of free BMD registers. I noticed you mentioned an Esther Brown in relation to Purvis which struck me as strange as Annies Mother was Esther Elizabeth Brown b.abt 1893 and d.1903. She married Richard Binnie in Killingworth Church 21 Nov 1891. Elizabeths father was John Brown a miner from wedding certificate. I have a lot more info on Annies sisters and father, including photos, if you are interested.
Mark