Who is The Reverend Errol Bartholomew from The Loved One and what is their importance?

The Reverend Errol Bartholomew is a non-sectarian minister who comes to the pet cemetery to give a ridiculous eulogy for an Alsatian dog. Dennis questions the reverend about how to become a non-sectarian minister, and from this conversation, Dennis hatches the plan to take up such work himself as a way to impress Aimée.