Hope you don't mind me asking questions -but I am a little confused by your post??
Your mother in law is Agnes Shearer??
Yet later you say she was 42/43 when your husband was born - so he doesn't remember anything about her only seeing his granny in hospital ? So who was his Granny?

Agnes Shearer's father's name was Russell?

? Where did you get this from???
If you could just post details of the birth cert you oredered - name -parents, mother's maiden name, p.o.b.
Suz