As far as I can see, Athol was just 19 and his brother James was 23 when the deed was signed. It appears that James died in 1890, aged only 36. I'll have another look through the book and see what I can work out. I'm still feeling last nights new year beer today so I'll have a look tomorrow and get back to you then.
I'm not sure if it's the done thing to post a photo from the book, would that breech copyright laws ?

Rust never sleeps !