A wise man and sage who served Vortigern.
When Vortigern was having problems building his fortress at Snowden, it was Joram who advised him to sprinkle the foundation with the blood of a child with no father. This led to the arrival of Merlin, who humiliated Joram by showing Vortigern the real reason for the fortress’s failure.
See also
Proximus | The Legend of King Arthur
Source
Brut | Layamon, late 12th century to mid-13th century