We can see that there was some Markham activity in Snape (even without the baptisms!)
Mary Markham, buried 6 January 1797, age 38
James Markham, buried 6 June 1819, age 74
also Letitia buried 15 Oct 1804, age 13
If James + Mary were a married couple, possibility might be 3 June 1781, Bawdsey, James Markham + Mary Mealing.
Marriage in Snape, 11 October 1799, Hammond Howell + Mary Markham