You have really set some memories going for me!
Though I only lived at the Terrace till I was 2, my grandad, Florence's husband and thus Hannah's brother in law was reservoir keeper at Harden so we spent a lot of time up there as children in the 1950's.
The Terrace is at the back of the graveyard in Hade Edge, you get to it down the lane at the side of what was Helm's shop. If I recall correctly a Stirk lived there in 1851, having married into the Mitchells, one of the original Magnum families.
Sykes Briggs died of typhus- it was his+ Hannah's father Alfred who drowned in the pond at Longley farm.
I think the chip shop was run by my dad's grandma, Hannah's mother.
There is a lot that we have in common- make a couple more posts and then I'll be able to PM you.. with mor info.
Can I ask if you have any old family photos?