Sorry to burst a few bubbles here, but I've spent the best part of a fortnight going through Corscombe parish registers and census returns looking for Marina Russell nee Sartin, and her "sister" or "sister in law" Edith Sartin nee Frampton.

Firstly - her name really is Marina. I can find no official records that list her as Mary Ann. Her name has been poorly transcribed as Ninna (the curse of cursive lettering - bane of the Genealogists' life) and Marian, but never Mary Ann.

There was a Mary Ann Sartin baptised in Corscombe in Feb 1832, daughter of James Sartin and Jane Park, but if you look a little further down the register, there is the baptism in August 1833 of Marina Sartin, daughter of James and Martha. They can both be seen quite clearly in the 1841 Census; Mary Ann is living with her parents in a farmstead called Brookwood, whilst Marina and her parents are at a hamlet called Norwood, all within the boundaries of Corscombe parish. Mary Ann Sartin never married, was listed in 1871 as an agricultural labourer. She died in 1877.

Secondly - Edith Sartin was not born a Sartin, she married William Sartin, brother of Mary Ann. Edith was baptised in West Chelborough - a hamlet to the east of Corscombe, in 1834. She also appears in the 1841 Census living with her siblings and parents Thomas Frampton and Jane Gale, in a farmstead called Lafterlains, now known as Lovelands. The confusion of Marina for the Mary Ann who was William Sartin's sister is probably where the confusion has arisen.

The common ancestors of William and Marina Sartin is 3x great grandparents John Sartin (born in 1675 and spelled Sertaine) and his wife Mary Bunn (born in 1671). This makes them 4th cousins. Edith Frampton, in marrying William Sartin becomes a 4th cousin by marriage.

That's a very basic summary of the relationship between Marina Russell and Edith Sartin, and an explanation for the name changes.

LTS - yes, rumours of my demise have been greatly exaggerated!