Finance, system of, under Diocletian, 337-339, 342; under Constantine, 339-342 Firmilianus, Governor of Palestine, persecution of Christians, 136 Franks, 1, 5, 54, 253 G Galerius, Emperor, becomes Cæsar, 5, 39; entrusted with command of Parthia, 6; victory over Parthians, 7, 74; and Diocletian, 8; domain, 8; capital at Sirmium, 8; character and influence, 16, 25; mother’s influence, 16; persecution of Christians, 17-19, 23-25, 74; becomes Augustus, 40; nominates new Cæsars, 41, 42; attitude toward Constantine, 42, 46, 60; sends Constantine to his father, 47, 48; acknowledges Constantine as Cæsar, 50; extends the census, 57; relations with Severus, 59; invasion of Italy, 60-62, 76, 81; calls a conference at Carnuntum, 63; and Diocletian, 63; appoints Licinius as Augustus, 64, 65; relations with Maximin Daza, 65, 66; recognises Maximin as Augustus, 66; death, 73, 74, 138; estimate of the man, 74, 75; nominates his successor, 75; edicts, 79, 99; aims carried out, 89; leaves wife to care of Maximin, 118; edict of toleration, 138-140 Gallienus, and senatorial order, 9; issues edicts of toleration, 13 Gaul, devastated by Franks, 1; recovered by Aurelian, 3; at Diocletian’s accession, 6; Constantius ruler of, 8, 52; Constantine in, 51, 56, 76, 82; Crispus in, 124, 242 Gibbon on the Circumcelliones, 186; on the Arian controversy, 194; on Constantinople, 263, 264; on Annibalianus, 309 Goths, invade Roman Empire, 123, 124; war with Constantine, 252 Gregory of Nyssa on Arian controversy, 206 Gregory, Saint, in Armenia, 27 Gregory, the Illuminator of Armenia, and the Nicene Creed, 285 Grosvenor, Mr., quoted on Constantinople, 273, 275, 278, 281 H Helena, mother of Constantine, ancestry, 43, 44; honoured by Constantine, 239; and death of Crispus, 245; pilgrimage, 249-251; legend of finding of the Cross, 250, 251; death, 252 Heraclea, siege of, 115 Heraclius, elected bishop, 152 Herculius, 8 Hermogenes, 228 Hierocles, author of _The Friend of Truth_, 20 Holy Apostles, Church of, 275 Holy Trinity, Church of, 275 Horses of Lysippus, 283 Hosius, Bishop of Cordova, commissioned to mediate between Alexander and Arius, 207; advises Constantine, 211; at Council of Nicæa, 212, 221, 228; falls from favour, 290, 316 I Imperial Council, 333 Italy, invasion of, 73 _ff._ J Jerome, Saint, exhortations against marriage, 348, 349; dream of, 353 Jovius, adopted name of Diocletian, 8 Julian, _Banquet of the Cæsars_, 77 Julian, Emperor, on Constantine, 124, 303-305; on Constantinople, 268 Julian laws on marriage, 350 Justinian, statue of, 269; builds Church of St. Sophia, 274, 276 L Lactantius, estimate of, as historian, 40-42, 47 Land tax, 337 _ff._