I found this in the Taranaki Herald dated 6th November, 1893 via National Library of New Zealand.

"Referring to the death of Mr Henry Nathan, the Wanganui Chronicle says -

For some three weeks past Mr H. Nathan had suffered from an affection of the heart, and on Friday, after dinner, which he enjoyed and at which he was quite cheerful, he took a seat on the verandah of his residence, in Glasgow Street, and suddenly without a moan or a murmur, fell back and expired. Mr Nathan was 77 years of age, having been born in 1816, in London, of Irish parents. In 1840, after having learned the trade of a goldsmith, he emigrated to New Zealand, arriving in Wellington in January 22nd, 1841 (the first anniversary of the colony)in the Staine Castle. (This should read Slain's Castle). No work being obtainable in his trade he joined the Police Force and was sent to Wanganui as Sergeant under Sub Inspector Garner. After serving time in that capacity he gave it up and went in for timber cutting, in which line he was very successful, nearly all of the timber of which old Wanganui was built being cut under his supervision. After carrying on that business for many years he went farming on his land at Goat Valloey. Having spent some years on the land he sold out and came to live in Wanganui where he soon became a member of the Town Board and remained one until Boards were abolished. He was in the first Municiple Council and continued to be a memeber until he was elected Mayor of Wanganui, but after his Mayoral term had expired he retired from public life.
In the early days Mr Nathan saw some rough times with the Maoris. He was in charge of the party that brought the bodies of the murdered Gilfillan family into town and he also assisted in arresting the murderers. He took great interest in Masonic matters, having been several times Master of both and the local lodges; in fact one of them almost owes it's existence to him. Until latley he enjoyed the best of health. He leaves a widow, five sons and an equal amount of daughters to mourn their loss. Mr Coker of New Plymouth is married to one of the daughters".

Wanganui Herald 3/11/1893

We regret to hear of the sudden death at about 1 o'clock today of Mr Henry Nathan, JP, one of the earlist and most repected of our settlers. Mr Nathan came to Wanganui about the year 1840, and was a resident of the town at the time of his death having filled various public offices. He sat in the Municipal Council for many years and filled the Mayoral chair for one term, at the expiration of which he retired into private life owing to increasing age and bad health. He was a prominent member of the Masonic fraternity, on more than one occassion filling the R.W.M. chair. He leaves a widow and grown-up family to mourn their loss. The deceased had passed the allotted span of man, having reached his 78th year. We in common with the many friends of the family, extend sincere condolences in their bereavement.

Taranaki Herald 4/11/1893

Mr Coker received a telegram from Wanganui on Friday afternoon which stated that Mr Henry Nathan, one of the oldest settlers in Wanganui, died suddenly about 2 o'clock, whilst walking in his garden. Mr Nathan came out in the year 1841 in the ship Oriental, to Wellington, and after a short stay in that city, went to Wanganui, where he settled down some land, and has remained there ever since. Mr Nathan was an ex Mayor of Wanagnui, and very much respected by all who knew him. Mr Coker is a son-in-law of Mr H. Nathan'.

NOTE: Interesting to see 2 different accounts of where and when he died.