I thought that the William Corlett who was also in Jalloo in the 1851 census was a possibility? - Although his age is wrong to have been bapt in 1819, at 36. Master Shoemaker b. Maughold, and married to Margaret aged 29, with children Christian Ann aged 7, Elizabeth aged 3, and Margaret aged 1, all b. Maughold.

Maughold bapts:
Christian Ann [daur of] William Corlett/ Margaret Kerruish [bapt] Parish Church 9 Dec 1844
Elizabeth William Corlett/ Margaret Kerruish Parish Church 18 Apr 1847
Margaret William Corlett/ Margaret Parish Church 27 May 1849
Esther Jane William Corlett/ Margaret Kerruish Parish Church 23 Apr 1854
Isabella William Corlett/ Margaret Kerruish Parish Church 31 Aug 1857
Elinor William Corlett/ Margaret Kerruish Parish Church 8 May 1859
Ann Eliza William Corlett/ Margaret Kerruish Parish Church 25 May 1862
William Thomas William Corlett/ Margaret Kerruish Parish Church 20 May 1867. Private baptism.

[There might be other children where the mother's surname is not given.]

William Corlett & Margaret Kerruish married Maughold 18 Nov 1843.

Sue