Christopher Mary Ann Pearce of Devon to Nz 1874 Married James Thacker

Mary Ann Pearce Christopher THACKER was the daughter of Jane CHRISTOPHER a nurse and Rob a joiner. Jane was from Cornwall and her father was believed to have been the mayor of Saltash. Her older brother was a minister and emigrated to New York.
Mary Ann was my gr gr grandmother. The family moved to Plymouth and Jane took in boarders. One of these was a cerain young man called James JOhn THACKER . Mary Ann was a dressmaker and his family lived a little further up the road in James St. James father and brother Albert and George all worked as did James for their father John James THACKER, Their mother was Caroline SMALL James and Mary Ann were married and my gr grandmother FLorence Jane Christopher THACKER was born in 1862. John THACKER AND SONS had a thriving building and masonry business. John died in 1874 and James and family set sail for Napier NZ. I have an account of part of the voyage and a medical shipboard report on Mary Ann. I am seeking more information on the CHRISTOPHERS in both Devon and Cornwall and the USA. Mary died in 1906 and is buried in the old Gorge Cemetery near Woodville NZ The photo is believed to be of Jane CHRISTOPHER