Molanus discusses the exterior features of St. Andrew would have been black of medium height and with a full beard.
“Four hundred years ago, John Beleth wrote about St. Andrew: ‘It is interesting to know that Andrew was black, with a full beard and medium height. We say this so that one knows how he should be portrayed in the Church.’ The deacon John writes in the Life of Gregory that a cleric recognised St. Andrew from his resemblance to the paintings when the latter appeared to him and said: ‘Get up! And go and tell the Count to leave my monastery safely, before he provokes my anger, for it is absolutely forbidden to take him for an inn.'”
“De S. Andrea scripsit ante annos 400. Ioannes Belethus. ‘Cognoscere operae precium est Andream fuisse colore nigro, barva prolixa ac statura mediocri. Hoc ideo a nobis dictum sit, ut sciatur quails in Eclessia pingi debeat.’ Ioannes autem Diaconus in vita Gregorii, scribit ‘eum agnitum esse ex picture similitudine a clerico cui apparens dicebat, surge et dic Comiti, ut ab hoc meo monasterio, in quo diversorium fieri omnino non licet, antequam me ad iracundiam provocet, salvus recedat.'”
Jean Beleth, Rationalis, ch. 164. John the Deacon, Life of Gregory, book 4, ch. 96.
Molanus 1996, 288.