Child Surname Child Forename Father Surname Mother Surname Mother's Former Name Year District Office Register Entry
HILL Alfred HILL HILL HATTON 1904 Forest of Dean Monmouth, Coleford 61 211
HILL Arthur Hartley HILL HILL HATTON 1910 Forest of Dean Monmouth, West Dean 2 360
HILL Ernest William HILL HILL HATTON 1907 Forest of Dean Monmouth, West Dean 1 263

Of the three Alfred is missing from the 1911 Census and a search of FreeBMD produces the following birth and death registration:

Births Dec 1904
HILL Alfred Monmouth 11a 18

Deaths Dec 1904
Hill Alfred 0 Monmouth 11a 10

As said in your note there is no record of a baptism or burial.

Mike