Graham Family

The Graham Family (or Graham Family Tree) is the current line of the Royal Family of daventry.

Background
Starting with Graham who married Valanice, they gave birth to Rosella and Alexander (who would late become Gwydion). Alexander would later marry Cassima. Rosella after a period of romance and dating would marry Edgar. Alexander and Cassima gave birth to Gwendolyn, and Rosella and Edgar gave birth to Gart.

In Graham's past but not listed on the Royal Family Tree documents is Hereward, and his father Great-Grandfather of Alexander and Rosella. King Edward may also be be related as a distant cousin through Hereword or his father.

Behind the scenes
The term Graham Family Tree (aka Graham Family) appears on a piece of artwork included in the The Official Book of King's Quest. At the time it only listed up to Cassima (being married into the family), and Rosella was not yet married to Edgar (there was also a time when Roberta Williams suggested the possiblity that she might marry Connor even, or at least be part of a love triangle between him and Edgar).

It is now confirmed that Rosella married Edgar and she gave birth to their son Gart.

This is the only source that might suggest that Graham is Graham's surname (and not necessarily his first name, or possibly that his full name is Graham Graham, though other jokes suggest that his full name might be Graham Cracker, or Cracker Graham)