Hello tristalli,
Wonder if this information helps you at all.?.
Birth
Dec Quarter 1840 Bristol
Henry Donovan
Ref Vol 11 Page 133
Birth
June Quarter 1851 Bristol (Spans the boundaries of Avon & Gloucestershire)
John Donovan
Ref Vol 11 Page 147
Birth
Sept 1855 Clerkenwell (Is in the County of Middlesex
John Bernedetto Donovan
Ref Vol 1b Page 439
Marriage
Dec Quarter 1851 West London
Henry Daniel Donovan Possible Bride Sarah Maria Evans
Ref Vol 2 Page 395
Hope this helps in some way.
Regards.
Maureen.
Liverpool.U.K.