yricum, 65-7, 157
Image-worship. _See_ Iconoclastic
Incarnation, doctrine of the, the Church's tenacity of, 19;
endangered by iconoclasm, 160, 164. _See_ Heresies
India, 9, 23, 96-8
Ingunthis, Frankish princess, daughter of Sigebert and Brunichild,
wife of Hermenigild of Spain, 48, 75
Iona, 116-17
Ireland, Christian and outside the Empire, 3; the Church in, 53,
113-16, 121-2, 183; Irish learning, 169-71; missionaries in
Thuringia, 136; monks in Iceland, 132; priests at
Glastonbury, 115, 119
Irene, Empress, 154, 164
Irminsul, the, a column worshipped by the Saxons, 140
Isidore of Seville, 76, 195
Isis, worship of, 111
Islam, 98. _See_ Muhammadanism
Istria, 63-4, 68, 151
Italy, conquered by Goths, 4, 29; reconquered by Belisarius and
Narses, 32; Imperial restoration, 33; Church in, 29-40;
S. Columban in, 56; saved from Arianism, 60; liturgy, 183; end
of the Eastern Imperial power, 143, 147-8; Charles the Great,
150-4; the Saxon Ottos, 197-201
Italy, Northern, long refuses to accept the Fifth General
Council, 21; Gregory the Great's activity, 65, 69; Bavarian
kings in, 135
Italy, Southern, Benedictines in, 62; effect of iconoclasm on,
157, 162

Jacobite sect, 109-10; in Syria, 23, 84
James, Studite monk, 162
Jarrow, monastery, 116
Jerusalem, Church and patriarchate of, 8, 16-17, 84, 87,
100-1, 156; councils at (553), 20; (628), 101
Jews, Gregory the Great tries to convert, 69; persecuted in
Spain, 77; Jews in Syria, 100; influence Muhammad, 101;
Jews in Arabia, 111-12
Joannicius, S., Bulgarian recluse, 124
John I., pope, martyred, 31
John II., pope, 15
John VIII., pope, 194
John X., pope, 197
John XI., pope, 174
John XV., pope, 199
John XVI., anti-pope set up by Crescentius (997-8), 199
John of Biclaro (Joannes Biclarensis), bishop of Gerona, 62 n.,
95 n., 75
John the Cappadocian, patriarch of Constantinople, 10, 90
John of Damascus (John Damascene), S., 87, 159-60
John the Deacon, biographer of Gregory the Great, 64, 182
John of Ephesus, Monophysite bishop and Syriac writer of
sixth century, 24, 111
John Maro, 89
John of Nikiu, Jacobite bishop, 86, 109
John the Patrician, recaptures Carthage from the Arabs, 109
John the Scot (Johannes Scotus "Erigena"), 170-1
Julian of Halicarnassus, 86
Justin I., emperor, 10, 32, 112
Justin II., emperor, 21-2
Justin