A quick look at the IGI shows up a few similar names eg;
King Edward Ursell -1785
King Edmund Hilton - 1788 (his father had the same name)
King George Roberts - 1790
King Richard Kirkby - 1798
King Charles Knight - 1798
King Charles Carter - 1839
(also found a couple of King Fishers

)
There are also some Queens:
Queen Victoria Castle - 1838
Queen Ann Baker - 1838
Queen Caroline Craddock - 1831
Queen Caroline Kershaw - 1860
I wonder how they coped when someone asked them their name.