John Warren & Maria were married in Cornwall in the district of Redruth they were living in a place called East end, thats where their daugter Susan was born in the same year, they have for fathers name & surname a William Warran & then farmer as the occupation.
Lookin now at the 1851 census I can now see W next to Ann's name I didn't see it before.
I've also got John down as dying in 1880, the dates you have put for his parents I also have, on the IGI site it goes back to John's Gr. Grandparents.
I've just looked at that site for the marriage of Jacob & Maira & it says this Jacob married Maria Courtis on the 13 mar 1822 at Bratton Fleming Devon, the same as on the 1851 census.
I was so excited to see what you sent me I didn't read tidy.
Thank you once again