Wilhelm von Boldensele (c. 1285 – 1338/39), born Otto of Nygenhusen, was a German friar, knight and pilgrim from Saxony.
A friar prior to his pilgrimage, Otto took the name William upon leaving the Dominican Order.
He met the Byzantine emperor Andronikos III, who entrusted to him a letter for the sultan of Egypt.
He describes the Giza pyramids in 1335, recording the inscription left behind in memory of the 2nd century AD Roman senator Decimus Terentius Gentianus by his sister Terentia.
[2] Ludolf von Sudheim, who traveled east in 1336–1341, made use of Wilhelm's account and later added to it.