Editing Regnal number (section)

=== Double names ===
Practice varies where monarchs go by two or more [[given name]]s. For [[Swedish monarchs]], the ordinal qualifies only the first name; for example, [[Gustav&nbsp;VI&nbsp;Adolf]], known as "Gustav Adolf", was the sixth Gustav/Gustaf, but the third Gustav Adolf.  By contrast, the [[Kingdom of Prussia]] was ruled in turn by [[Frederick I of Prussia|Friedrich&nbsp;I]], [[Frederick William I of Prussia|Friedrich&nbsp;Wilhelm&nbsp;I]], [[Frederick II of Prussia|Friedrich&nbsp;II]], and [[Frederick William II of Prussia|Friedrich&nbsp;Wilhelm&nbsp;II]]; and later by [[Wilhelm I of Prussia|Wilhelm&nbsp;I]].  Likewise [[Pope John Paul I]], who chose his double name to honour predecessors [[John XXIII]] and [[Paul VI]], and was succeeded by [[John Paul II]].