Battle with the Danes at Godalming and Farnham

I wanted to ask you please if you had any historical basis for this battle – if you found out anything about this area particularly  or did the the battle in the story emerge from your imagination? I live in Godalming and am interested in researching the Anglo Saxon history …our local museum does not seem to have anything in particular so was wondering where else I can research this period please?

Jo Prudence