Stephanus & Stephani Inventio | 
Protomartyr.
 His dies natalis (26 Dec.) is widely celebrated and not
        characteristic for the Low Countries.  
 Translation feast: 3 August
        
        
The translation office (in prose) is ascribed to bishop Stephanus of Luik, early 10th century.
To the three manuscripts mentioned by Auda, all dating 13th century or younger, the 12th century NL-Uu 406 can be added.
Auda: Étienne de Liège, pp. 42-66 (edition: pp. 58-66)
Mentioned in Hughes: LMLO, referring to Auda.