No, Fanta is not called Royal.
The reference provided mentions that at one point there were three competing orange drinks: Pepsi's Mirinda, San Miguel's Royal, and Coca-Cola's Fanta. However, it clarifies that Royal Tru is a carbonated fruit-flavored soft drink brand owned by The Coca-Cola Company that's available only in the Philippines. It's often referred to as simply "Royal". This indicates Royal is a separate brand and not another name for Fanta.
