Hi
I found this information on Findmypast Parish Records Collection burial. I'm not sure if you have this and I don't know what significance the codes mean, maybe someone else can help with that.
Jane Ann Elizabeth
Surname:RIGLEY
Year:1891
Age:47
Place of Event:Ilkeston
Reg Office:396
County:ID/37/091
Register Entry:Jane Ann Elizabeth
Record source:Derbyshire Registrars Death Index
Bev