The Excerpta Valesiana are so-called because they were first published in Paris by Henricus Valesius in 1636. They were written by an unknown writer, c. 550 AD.

VII,36 (474 AD)
Igitur imperante Zenone Augusto Constantinopoli superveniens Nepos patricius ad Portum urbis Romae deposuit de imperio Glycerium et factus est episcopus et Nepos factus imperator Romae. Now during the reign of Zeno Augustus at Constantinople, the patrician Nepos came to the Port of the city of Rome, deposed Glycerius, who was made a bishop, while Nepos himself became emperor at Rome.

Translation: Loeb.