There is a possibility that Elias was in trouble in August 1866
"Petty Sessions, Saturday Before H. Williams, Esq. (chairman), E W. Williams, Esq., E. Pearce, Esq., and Major Steward.— Elias Bowditch was summoned James Lovelace, his master, for misbehaviour in service"
It seems that he had an arguement with the farmer who employed him under a contract as a yearly servant and refused to go to work. He claimed he and his lad were owed money and that he had a wife and seven children to support. The magistrate disolved the contract.
Perhaps that meant he had to go elsewhere to work and changed his name.