Mary was the 16th of 16 children, born over 20 years (not all verified), of Robert Christopher (1790-1872) & Jane Pearce (1794-1871) who married in Devon 1869

Mary married James John Thacker (1839-1928) in Stoke Demerel, Devon in 1862 & had 6 children before the family embarked from London, on the Helen Denny, on 28 July 1874 and arrived into Napier on 22 Oct 1874 1874. They had another 4 children in NZ
James was a builder in Devon and he became Govt Inspector of Works in the Manawatu area. He died in 1928 and is buried in Auckland with his son-in-law Frank Farrow
their 10 children
* 1862 - 1955 Florence Jane Christopher Thacker
- married Walter Fulford 1884, married Thomas Francis Quinliven 1887
* 1864 - 1963 Jessie Ann Christopher Thacker
- married Fred Spurrell 1883, married Alfred Edwin Colmer
* 1866 - 1938 Alice Maud Christopher Thacker
- married George Chubb Foster 1891
* 1868 - 1933 Nellie Christopher Thacker
- married Edward Benjamin Rabone 1890
* 1871 - 1963 Emelyn Christopher 'Emily' Thacker
- married Frank Farrow 1892, married Leonard Nixon Bean 1935, married Edward Willetts 1959
* 1873 - 1954 James John Christopher Thacker
- married Maud Mary Ryan 1902
* 1875 - 1958 Mary Ann Christopher Thacker
- married Frederick John Browne 1922
* 1878 - 1960 William Alfred Christopher Thacker
- married Ebba Christina Stelin 1902
* 1880 - 1968 Frederick George Christopher Thacker
- married Geraldine Nellie Alice Schoch 1913
* 1882 - 1883 Edith Christopher Thacker (age 6 months in Napier)

Mary signed sheet no 503 of the suffrage petition in Woodville in 1893

Wairarapa Daily Times, 9 Feb 1904
Woodville News I regret to have to chronicle the death of Mrs Thacker, wife of one of our oldest settlers. Mr Thacker left her in apparently her usual health at mid-day on Saturday, returning after 5 p.m. to find her dead in her chair. She had been engaged in jam making. It is an awful blow to Mr Thacker and his family, more especially coming at the present time, as they were all looking forward to taking part in the festivities in conjunction with the opening of the new Post Office, on Tuesday. Mr Thacker is the Government Overseer for Public Buildings and has taken more than ordinary interest in the erection of the local structure. Mrs Farrow (Dannevirke), Mrs S. Rabone, Mrs Spurrel, Mrs Forster and Messrs F. and J. Thacker are children of the deceased lady. She was a regular attendant at the Anglican Church. Great sympathy is extended to the family by all who knew them.

Woodville Examiner, Sudden Death
Quite a gloom was cast over the town on Saturday evening when it became known that Mrs Thacker, wife of Mr J. J. Thacker, had been found dead. Mr Thacker returned home from his duties as Inspector at the Post Office building about half-past five and found his wife seated in a chair quite dead. The doctor was immediately sent for and pronounced that death was due to heart failure. The late Mrs Thacker was afflicted with heart trouble and had been under medical care for some years. Deceased was of a bright, cheerful disposition and was highly respected and beloved by a large circle of friends, who will mourn her loss greatly.
Mr and Mrs Thacker arrived in the colony 80 years ago from Plymouth, England. The late Mrs Thacker was a native of Plymouth. They landed first in Napier, where they remained for about 12 years, Mr Thacker carrying on the business of a builder and contractor. Mr Thacker afterwards took up some land in the bushmills block and resided on the same for about 7 years and then they came to Woodville, where they resided practically ever since. Nine children are left to mourn the loss of their mother, six daughters and three sons. The daughters are Mesdames T. F. Quinlivan, junr., of Shortland, Hasting, J. Colmer, of England; G. Foster, of Palmerston North, E. B. Rabone, of Woodville; F. C. Farrow, of Dannevirke; and Miss Thacker. The sons are Messrs James Thacker, of Stratford; W. A. Thacker, of Christchurch; and F. G. Thacker, of Wanganui. The funeral takes place at 9 o'clock to-morrow morning.