was magister equitum per Gallias under Magnus Maximus [7], who entrusted his son Victor to him in AD 387. Q. was killed in 388 during an advance east of the Rhine near Neuss against the advice of Nannienus.
Bibliography
PLRE 1, 760
P. Richardot, Un désastre romain peu connu sur le Rhin, in: Riv. storica dell' antichità 25, 1995, 111-130.