A rather mixed list of "Nubian saints" is given on this site:
nefertamu.tripod.com/nsoc.html
The entry on St Maurice is interesting.
SAINT MAURICE - PATRON OF GERMAN ROYALTY
A celebrated personality in Europe since the Third Century of the Christian era. He was born a Theban (Nubian) in Upper Egypt / Sudan. Yet though Christianity was flourishing in this region, it was under the control of the Roman Empire as other lands in the vicinity of the Mediterranean Sea.
St. Maurice, was the leader of the Roman legion of the district. In autumn of 285 C.E., Emperor Maximilian sent a large army to Switzerland to oppose a rebellion in the south of Galla. These forces included the Theban Legion.
St. Maurice was assigned to Agaunium, 20 Kilometers from the Genfer Lakes. At a large field service before the battle, the soldiers were required to worship icons of pagan gods which included a statue of the emperor. The entire legion refused. This was considered an act of rebellion and blasphemy. They were
charged with high treason and mutiny before the enemy. The result was the beheading of Maurice and his companions.
From then, Christians cherished and adored Maurice as a martyr. Within a century of his passing, he was beatified and a church was constructed over his tomb. The Swiss national flag bears a white cross in his honour. Over the ages the cult of Maurice spread over Germany where he became the official Saint Knight of the Emperors and Bishops who sought his miracles and blessings. Coins and Coats of Arms for many districts and cities in Germany were made in his honour. He is still worshipped in Poland, Romania, Switzerland, Austria, Greece, Italy, Czechoslovakia, Hungary, Britain, Germany & the former states of Yugoslavia, where his iconography decorates churches and shrines.
His feast days are :- February 25th; June 3rd; September 11th, 22nd, & 28th; October 11th, 16th & 19th.
________________________________________