Marg, you need to establish who Harold's parents were before looking for uncle? William (several possible Williams in Douglas going by his ages in censuses). Which is why I asked for their details in 1901 when Harold would have been 3 or 4. And then for the census details for his father - the closest census following his (father's) possible date of birth?
What were the details given on Harold's birth cert in 1897? Who were the other children in the family?

Sue