I just came across your post looking for John Bowering, you said his father was Henry. I too have a Henry in my tree, what year was your Henry born. This is the info I have on my Bowerings, does any of it ring a bell with you?
My grt grt grandmother was called Ellen Bowering, she was born in Torquay 1880. She had 3 brothers, Henry-1866, Richard-1872, Alfred-1877 (all soldiers and born in Torquay) and also a sister Caroline- 1887. Her father was Richard (1841, Jersey) and Mary (1851, Southampton. I have only found records on them in the 1891 census, but think that prior to this the name was BOWERN.
I have found traces of the boys through their military records, but other than that nothing else.
Look forward to hearing from you.