 Kings Rama I and Rama II were awarded noble titles and names before they assumed regnal names, which were then changed by subsequent kings.As neither noble titles nor names are necessarily unique, it is customary to list the highest title and awarded named first, followed by former names and titles (and personal and family names in parentheses) as needed.Descendants of the nobility, both hereditary and non-hereditary positions, generally take the noble name of their ancestor for a surname.