Rachel - he was survived by two children - he'd lost a little girl when she was 3 -you can read a little bit more about him under the McAllister chapters as his wife was the former Bridget McAllister, who not only lost her husband but her Dad and brother. Andrew Agnew's sons still live around the town, and I am in touch with the former Doreen McAllister, Bridget's youngest sister if you need any familial links.
Ray Devlin wrote a great book on the history of the pit called The Most Dangerous Pit in the Kingdom, which is still in print.
BBC Radio Cumbria also has a section of their website honouring the disaster victims that incldude interviews with descendants and rescuers.
Cumbria County Archives also has a vast file of info and newspaper reports about the disaster
Amanda