Pritchard Henry of Blenheim New Zealand Born 1832 IN UK

Would like any information about Henry PRITCHARD, baptised in Islington, UK on 12 Aug 1832. He died 6 Sept 1897 at Wairau Hospital, Blenheim, NZ, aged 65 yrs. Henry PRITCHARD married Mary Ann HOCKEY 5 June 1865 at Picton, NZ and they had 12 children. Following Henry's death his wife Mary Ann HOCKEY remarried in 1902 to a Mr John BRASS. John BRASS died in 1910.
In 1916 Mary Ann married a third time to a Mr Frederick NOBLE.
Henry PRITCHARD lived most of his 25 years in New Zealand as a publican in Blenheim.
Would like to know when he came to New Zealand and if he had any other family members in NZ.