Two entries with the name Patrick.
Patrick
A nobleman from Scotland.
While Arthur was besieging the Saxons Colgrim and Baldulph at York, Patrick learned that another Saxon – Cheldric – had landed nearby with a force of soldiers. He rode to York and warned Arthur to break off the siege or be destroyed by Cheldric’s onslaught.
Source
Brut | Layamon, late 12th century to mid-13th century
Patrick
Patrices, Patrik
The son of Duke Mathem of Soane and brother of Avenable, Julius Caesar’s wife. At Merlin’s advice, Patrick married Caesar’s daughter Foldace.
Sources
Vulgate Merlin | 1220-1235
Prose Merlin | Mid-15th century
Note
The name Patrick means a ‘senator’, a ‘nobleman’.