Sa Dula was a painter whose activity, according to the dates that have survived, falls between 1308 and 1355. Little is known about his life, so it is not possible to reconstruct with confidence his training, his place of work or the extent of his output. His name is the only firm identifying detail, and his years of birth and death mark the period in which he may have practised his craft, a stretch of the late Middle Ages.
Any attribution of works, style or influence to this painter should be considered hypothetical until stronger evidence emerges. For now, his figure is known only in outline, and the interest of his case lies mainly in what remains to be documented.
Pinacopedia includes this entry as a starting point, pending further research that may clarify his career.