Not that this helps find Henry or Ann after 1901
1901 census Henry Bell,
occ ships stoker seas wife Ann
Mary E & Ann R
address 15 Adam StreetThere is this baptism and her dob matches that of
Mary Elizabeth Blinkhorn see reply 9
but her mother is listed as Sarah

Mary Elizabeth Bell Birth
26 Jul 1898Baptism 12 Aug 1898 Middlesbrough, St. Paul, Yorkshire
Father Henry Bell,
occ sailor Mother Sarah
abode 65 Adam StreetTeesside, England, Church of England Births and Baptisms, 1813-1923 - image on Anc*
Perhaps the marriage certificate might confirm if her father is deceased