According to tradition, the patricians were descended from the "city fathers", or patres; that is, the heads of family at the time of its foundation by Romulus, the first King of Rome. Other noble families which came to Rome during the time of the kings were also admitted to the patriciate, including several who emigrated from Alba Longa after that city was destroyed by Tullus Hostilius. The last known instance of a gens being admitted to the patriciate prior to the 1st century BC was when the Claudii were added to the ranks of the patricians after coming to Rome in 504 BC, five years after the establishment of the Republic.[1][2][3][4]