guess the family didn't exist
They clearly did if you have George & Henry on census!
The 1851 for Sussex shows George as a master mariner
The 1861 for Sussex shows Jane as a mariners widow
So George either died in Sussex between 1851-1861 or he died at sea between those dates
They were living in the Worthing registration district in both 1851 and 1861 and this is the only death listed for that area between 1851-1861 but it relates to their son who was aged 15 in 1851
Deaths September qtr 1852
HARVEY George Edgar Worthing 2b 161
I reckon he died at sea