I was browsing the IOM 1901 census today, and spotted:

49 Bucks Road, Douglas, John Parkes, Head, single, age 26, Butcher, employer, born Michael, speaks English
Samuel H Parkes, Brother, single, age 25, Salesman butcher, worker, born Michael, speaks English
Mona Parkes sister age 23 - - born michael, speaks English
plus 4 staff named.

Hope this helps, although you will be able to check this on-line as soon as things calm down. Susanne.