Tom, the Charles Howland Andreas 1854-1924 who married Isabella Sayle can't be the one who was in the 1841 census:
HOWLAND Charles 50 Bri 1463/6 9 12
Charles Howland, aged 50, in a cottage in Bride, stone mason, with Ann 15, James 10, Thomas 5, and Robert 5 [ages rounded].
Ann bapt 29 JUN 1824 Bride, Father: CHAS HOWLAND, Mother: ISABELLA SAYLE
James bapt 8 AUG 1826 Bride, Father: CHAS HOWLAND, Mother: ISAB SAYLE
Thomas Robt bapt 21 DEC 1832 Bride, Father: CHARLES HOWLAND, Mother: ISABELLA SAYLE [from IGI]
Charles HOWLAND & Isabel SAYLE married 3 Oct.1818 Bride, and had several other children as well as the ones with them in the 1841 census.

It isn't unusual in the IoM to have same name couples.

Sue