I think we need more context on this one
I shouldn't it be zyhon as a nominalised possessive pronoun? Doesn't this say "the Queen loves his [something]"?
I think it's likely a plural of "his" in this case. Terrestrial nouns with the -on ending have -a as a plural.
His as in "My car is big. His is not." Only it's left out what the "his" is referring to.