I can’t follow this thread. 
How did we get from Henry to John?
Jamjar
We haven't really Jamjar. Just exploring whether there could be a link between Henry and this John, apart from sharing the same father's name of John.
I am not convinced there is really so far...
I think John, husband of Agnes Wakeham, died pre 1841. Family shows in St Leornard, Devon for 1841:
James B Rodier 25
Mary G Rodier 22
Ann Hopping 50...Ann is a common variant of Agnes
Agness Lus (?susan)Hopping 17
John Hopping 16
No sign of a Henry in that household to help further.
Monica
John and Rosetta had a daughter Agnes born and died same year as mother:
1849 HOPPING Agnes John HOPPING Rosetta LOYD Adelaide 2/145
1849 1/167 HOPPING Agnes John HOPPING (F) Adelaide
1849 1/171 HOPPING Rosetta John HOPPING (H) Adelaide
West Terrace Cemetery: HOPPING Rosetter 5-6-1849 aged 26 (location within cemetery unknown)
There’s a William HOPPING there, also, who died 30-1-1882 aged 73.
Jamjar