Thank you, that is brilliant.
It is good to know that the couple William and Mary Ann are first cousins. It was my first thought, but I didn't know how to confirm it.
The other thing I am trying to figure out is a marriage or name of a spouse.
A son of James and Sarah Harris - Jacob Deacon b.1810 with an Elizabeth (unknown maiden name) has possibly 12 children....
1834 Martha Deacon christened 5th January, East Ilsey
1835 William Deacon christened 11th October, East Ilsey
1837 Mary Deacon christened 26th March, she dies age 7 in 1844, buried 8th December, St Mary, f labourer
1839 Elizabeth Deacon born, mmn Deacon, she dies age 5 in 1844, East Ilsey, buried 8th December
1841 Sarah Deacon born, she dies age 3 in 1844, buried 9th December
1842 Hannah/ Ann Deacon
1844 Alfred Deacon born (Deacon)
1846 Rebecca Deacon christened 31st May, St Marys Church, East Ilsey, Father Labourer
1848 Tryphena Deacon christened 13th August, St Mary, Jacob and Elizabeth, labourer, mmn - Deacon
1850 Abraham Deacon born (mmn Deacon)
1852 Harriet Deacon christened 29th August, St Mary, East Ilsey, Father Jacob Deacon, labourer, residence Worldsend, Hampstead Norreys (mmn Deacon)
1855 Sarah Ann Deacon christened 25th March, Sutton Courtenay
I checked on GRO and some of them list the mother's maiden name as Deacon, I haven't found a marriage yet between Jacob and Elizabeth
They appear on the 1841 Census with a Mary Stanmore (age 80), but there doesn't seem to be other links (yet)