Q!
Not many have a surname starting with Q.
We are one of them! So I will talk about our ancestor John QUARTZ Moore.
What a cool middle name! It has to be a surname because I’ve never, ever heard of that as a first name. John Quartz Moore was born in Belfast in 1883.

Proof of middle name Quartz for John Moore 1883-1918
I have been having a lot of trouble finding more information about the Moore family. I know his father was David Moore born in County Down (1835-1912). None of the records show exactly where David was born and therefore I haven’t been able to go back further. THAT and the fact that the surname Moore is like Smith or Jones in County Down!
I’m thinking David’s father Robert Moore was married to someone with the surname Quartz. This will be a project for another time.
I can’t wait to find out more information but Irish research frustrates me to no end…especially Protestant families. Roman Catholic records are now available and local churches kept great records. Protestant churches???? Not so much. Take that, and the fact that so many records were destroyed by fire during the troubles or ON PURPOSE, you can see it’s a genealogist’s worst nightmare.
Stay tuned. If I ever find out this puzzle I will most certainly write about it!