Your 1861 census entry looks a possibility, at 4 Nth John St, Douglas.
John Radcliffe 46 Boot & shoemaker b.Andreas
Margaret Radcliffe 53 Greengrocer b. Bride
Thomas Radcliffe 12 scholar b.German
Catherine Radcliffe 10 scholar b.German.

If someone doesn't help you further in the meantime I'll have another look tomorrow. Father John being born in Andreas might lead to the Croggane connection.

Sue