Probably comes down to one of those conversations you have 'down the pub' At least we can all be clear it was not Hills that invented it and that his father and wife had a decent role in its commercialisation. Too often things like this are attributed only to one person - usually the most charismatic and rarely a woman if she was involved.
I have some great Wikitree profiles I want to write related to the Bauple nut (also has other traditional names), which was renamed after a Scottish settler. It was commercialised through the efforts of some Hawaiians, who bred it to be easier to break the shell after the tree was transferred there primarily for its natural beauty and capacity to stop erosion. However, it is iconically Australian, delicious, and endemic to the forests of Southern Queensland and Northern New South Wales and it is rarely recognised in its original context.