I have only just registered with roots hat, so your request may no longer be relevant; but Jethro Smale was married to my mother's great aunt, Fanny Godsave, from Great Warley, Essex. I think that Jethro worked his passage back from NZ, as on his police attestation forms, his occupation was given as seaman.
He was with the Thames police, stationed on a floating police station at Greenwich. He was drowned on August 21st 1890. The family tradition was that for a bet he said he could dive in and swim under the station - he drowned! Because he had taken off his jacket, he was not in uniform, and thus his widow got no pension. Police re rods confirm no pension was granted.
I have a little more information, if you are interested.
D Morgan