The Clifton Vestry Book [P7/8/1] in 1825 includes the following memorandum, of interest to both medical and family historians: "In consequence of the smallpox breaking out in the parish, the following named 85 persons were vaccinated by Mr Gay at Shefford at the expense of the parish at 2/6 each".

• Green family – residing at Shefford
• Armour, Amos
• Adams, Elizabeth, aged 5 years
• Adams, Sarah, aged 1 year
• Burnage, Jane, aged 70 years
• Burnage, Mary, aged 3 years
• Burnage, Ann, aged 1 year
• Burnage, Ann, aged 6 years
• Chapman, Sarah, aged 21 years
• Cook, William , aged 30 years
• Cook, John, aged 6 years
• Copperwheat, Manning, aged 3 years
• Copperwheat, Elizabeth, aged 5 years
• Copperwheat, John, aged 3 years
• Dilley, Frances, aged 35 years
• Dilley, Sophia, aged 14 years
• Dilley, Samuel, aged 12 years
• Dilley, Elizabeth, aged 10 years
• Dilley, Thomas, aged 8 years
• Dilley, mary, aged 6 years
• Dilley, John, aged 4 years
• Dilley, rebecca, aged 1 year
• Endersby, James, aged 60 years
• Endersby, James, aged 7 years
• Endersby, William, aged 4 years
• Endersby, Thomas, aged 2 years
• Endersby, John, aged 10 weeks
• Endersby, Robert, aged 3 years
• Endersby, William, aged 1 years
• Earl, Jesse, aged 16 years
• Earl, Mary, aged 6 years
• Earl, John, aged 4 years
• Earl, George, aged 1 years
• Furr, Charles, aged 3 years
• Furr, Ann, aged 1 years
• Foster, George, aged 22 years
• Foster, Sarah, aged 21 years
• Godfrey, William, aged 5 years
• Godfrey, George, aged 2 years
• Godfrey, Elizabeth, aged 1 years
• Harwood
• Lockey, Elizabeth, aged 8 years
• Lockey, Mary, aged 6 years
• Lockey, Hannah, aged 3 years
• Lockey, George, aged 4 years
• Lockey, Henry, aged 2 years
• Lockey, Charles, aged 3 years
• Musick, Sarah, aged 70 years
• Massey, William, aged 6 years
• Norton, Sarah, aged 60 years
• Pratt, Mary, aged 8 years
• Pratt, John, aged 6 years
• Pratt, William, aged 2 years
• Roberts, William, aged 3 years
• Stocks, Ann, aged 6 years
• Stocks, James, aged 3 years
• Stocks, William, aged 1 year
• Stevens, Elizabeth, aged 70 years
• Stevens, William, aged 7 years
• Strap, William, aged 3 years
• Strap, infant, dead
• Tompkins, Nelly, aged 6 years
• Tompkins, Ann, aged 3 years
• Taylor, Ann, aged 7 years
• Taylor, Thomas, aged 4 years
• Taylor, William, aged 2 years
• West, Ann, aged 8 years
• West, Edward, aged 6 years
• West, William, aged 8 years
• West, John, aged 5 years
• West, Henry, aged 3 years
• West, Louisa, aged 6 months
• Wright, James, aged 25 years
• Wright, John aged 3 years
• Wright, Martha aged 2 years
• Wright, Ann, aged 8 years
• Wright, James, aged 5 years
• Wright, Emily, aged 6 months
• Webb, William, aged 60 years
• Webb, Jane, aged 60 years

Mr. Gay had been practising in the locality for some years. This is a letter, with rather eccentric grammar, from the Clifton Overseer of the Poor, George Field, to Samuel Whitbread in July 1811 [W1/781]. "This is to inform you that Mr. Hick and Mr. Gay have attended this Parish these fifteen years his salary was 2 Guineas for the first ten years and from the last 5 years has been three Guineas and a half includes all accidents, small Pox [sic] etc. but not Midwifery has been no extra allowance made to my Knowledge". Gaye & Hilliard are listed as surgeons in Shefford in a directory of 1841. A directory of 1785 lists surgeon George Hicks in Shefford.