And in 1901 in Kirkstall, Yorkshire:
Frank Earl, head, 33, ?? maker, born Clifton, Beds
Mary M Earl, wife 33, born Castleford, Yorks
Piece: 4247; Folio: 82; Page: 7
(at Ancestry their surname was mistranscribed as Carl)
I found them on the 1891 census as well but not in Clifton, Bedfordshire. They were in Whitwood, Yorkshire as follows:
Frank Earl, head, 23, glass bottle maker, born Clifton, Bedfordshire
Mary M. Earl, wife, 23, born Castleford, Yorkshire
Piece: 3762; Folio 63; Page 8
There are two Frank Earls born and living in Clifton on the 1901 census who may be the Frank Earl who died in WWI. They were born 1893 and 1896. The Frank born in 1868 seems a little old to be fighting in the war.
Jacquie