In the 1861 census William appears to be back in Maughold lodging in a large household of people apparently unrelated to him:
2 11 Waterloo Road William HARDIE Lodger WID 88 Retired Farmer Scotland.

This looks like his burial on Brian Lawson's website:
HARDIE, William 90 Bri 15 Oct 1862

He was a widower in 1861 but I can't see a burial for Anna/Anne.

Sue