William Arthur Philip Louis

and Henry Charles Albert David (Harry)

King Charles's father (Philip V) was the uncle of Louis XV, so that made Charles and Louis XV grandnephews.

The names of Spanish monarchs are: Ferdinand II of Aragon , Isabella I of Castile, Philip II, Philip III, Philip IV, Charles I, Charles II, Philip V, Louis I, Ferdinand VI , Joseph I.

phillip arthur Charles ect.

That is incorrect. He is William Arthur Philip Louis. It is Prince Henry (Harry) who has Charles as one of his given names.

There were four kings:

Louis III, 1501-1504, (Louis XII of France)

Ferdinand III, 1504-1516, (Ferdinand II of Aragon)

Charles IV, 1516-1554, (Charles I of Spain)

Philip I, 1554-1598, (Philip II of Spain)