Only one William Sheard comes up on Man that I can see, he is aged 7 in 1891, a visitor staying at Cronk ne Vesage (spelling corrections accepted!) he is a scholar and born Peel.
Although he is down as a visitor, it looks looks like Esther, his mother, is general domestic servant to the head of house Thomas Quirk. (36, Farmer, b. Michael)
Esther Sheard, ser, widow, 32, gen ser (Dom),b. IOM Patrick
John Thompson,ser,s,16, farm servant, IOM Marown
William L Sheard,visitor,s,7,scholar,IOM Peel
They appear to be living in a separate household or building there.
I have put the page at "http://rareplants.co.uk/william_sheard_1891.jpg" if you or anyone wants to see it, will leave it there for a week or two.
Hope it helps, ask again if you need more. If this is the wrong one, let me have a few more details and will have another look.