Hi Lois,
A possibility for John Radcliffe aged 40 was John bapt 3 March 1811 Andreas son of Richard RADCLIFFE (1772-1849) & Jane CHRISTIAN (1765-1850)- or did you find him somewhere else? [Richard b.1772 son of Richard RADCLIFFE & Elizabeth STEVENSON from the Belfast family, Andreas.]
Richard & Jane Radcliffe will 1849 mentions: "We jointly leave and bequeath unto our son John who is now in America
the sum of two shillings and six pence as legacy......."
Sue