Moondial & The LOWE Family of Belton, Lincolnshire

During the book and TV series MOONDIAL the main character Minty wanders around the churchyard of St Peter & St Paul, Belton, Lincolnshire and comes across a “tiny thumbnail headstone” with “E. L. 1871” engraved upon it. This is later revealed to be the final resting place of the character “Tom”, E.L. standing for his given name of Edward Larkin, but who was the real E.L.?