FreeBDM - have a marriage Northleach District (which covers Chedworth) - Dec 1851 (1 November 1851 - Chedworth - CLDS)

John MORSE & Elizabeth MOSS - this certificate, would give you the name of John's father.

Chedworth St Andrew Marriages 1837-1851 are on the 'net' but stops in March 1851

http://members.shaw.ca/panthers1/ChedworthStAndrewsMarr.html

but there is a marriage of a Cornelius KEEN to a Mary Ann MORSE, father John MORSE, labourer, in 1848. No MORSE in Chedworth 1851 census.

1851 Census, Chedworth

William KEEN - 66 labourer, born Wilts, Wanborough
Mary Ann KEEN - 60 - born Glos. Easington
Cornalus KEEN - 20 - born Chedworth
Maria KEEN - 32 - born Chedworth

Think this is Elizabeth

1851 Census, Chedworth

Thos MOFS - 56 - born Dowswenn (Downsend?)
Sarah - - 50 born Glos. Withington
Elizabeth - 21 - born Deerhurst, very near to Tewkesbury
William - 18 - born Chedworth

1841 Census, Chedworth

MOSS

Thomas 40, Sarah 40, Charles 15, Martha 13, Ann 11, Elizabeth 9, William 7