He was a Jew. Possibly the same Justus mentioned in Acts:
Act 18:7 And he departed from there and entered the house of a certain man named Justus, one who worshiped God, whose house was next door to the synagogue.
Justus was the fourth Archbishop of Canterbury.
Justus died in 627.
Justus Motter's birth name is Justus Hinshaw Motter.
Andy Justus is 6'.
Justus Vingboons was born in 1620.
Justus Danckerts was born in 1635.
Justus Menius was born in 1499.
Justus Menius died in 1558.
Justus of Trieste died in 293.
Justus Perthes died in 1816.
Justus Perthes was born in 1749.
Justus DaLee died in 1878.
Justus DaLee was born in 1793.