The mss. collated by the Ben. Edd. for their edition of the De Spiritu Sancto are five entitled Regii, and a sixth known as Colbertinus, now in the national library at Paris.  The Ben. Regius Secundus (2293) is described by Omont (Inventaire Sommaire des mss. Grecs) as of the Xth c., the Colbertinus (4529) and the Regius Tertius(2893) as of the XIth c., and the Regius Primus (2286), Regius Quartus (2896), Regius Quintus(3430) as of the XIVth c.