There is this birth...
HINTON, VINCENT mmn ESSEX
GRO Reference: 1850 J Quarter in AMERSHAM Volume 06 Page 337
1851
Harefield, Middlesex
John Hinton 36 Head
Rose Hinton 30 Wife
John Hinton 9 Son
Sarah Hinton 6 Daughter
Ann Hinton 5 Daughter
Joseph Hinton 3 Son
William Hinton 1 Son, Great Missenden, Buckinghamshire
It looks like he was registered Vincent, but called William?
Also a daughter was called Rose, her marriage 1915 online with his details as William. Looks like after 1911 from 1921? he was recorded as Vincent...unless there is a better explanation.
Added: John Hinton & Rose Essex married 1840 - image online. No William Hinton registered same area/time.
Cas