Which WH Gill did you have in mind? The following were pulled off the Lawson Microsite burial index in a few moments and does not include those who died as infants or those whose surnames were recorded at the last as Gell or Gale:

GILL, William Henry, 71, Braddan, 14 Dec 1929
GILL, William Henry, 65, Maughold, 25 Jun 1931
GILL, William Henry, 70, Maughold, 31 Jan 1951
GILL, William Henry, 62, German, 21 Sep 1957

A little more information may lead to more replies.