Free God's War: A New History of the Crusades by Christopher Tyerman

Constantinople (Cambridge 1965)
K. Setton, The Papacy and the Levant 1204–1571 (Philadelphia 1971–84)

Select List of Rulers
    Papacy
    Gregory VII 1073–85
    (Anti-pope Clement 1080–1100)
    Victor III 1086–7
    Urban II 1088–99
    Paschal II 1099–1118
    Gelasius II 1118–19
    Calixtus II 1119–24
    Honorius II 1124–30
    Innocent II 1130–43
    ( Anti-pope Anacletus 1130–38 )
    Celestine II 1143–4
    Lucius II 1144–5
    Eugenius III 1145–53
    Anastasius IV 1153–4
    Hadrian IV 1154–9
    Alexander III 1159–81
    Lucius III 1181–5
    Urban III 1185–7
    Gregory VIII 1187
    Clement III 1187–91
    Celestine III 1191–8
    Innocent III 1198–1216
    Honorius III 1216–27
    Gregory IX 1227–41
    Celestine IV 1241
    Innocent IV 1243–54
    Alexander IV 1254–61
    Urban IV 1261–4
    Clement IV 1265–8
    Gregory X 1271–6
    Innocent V 1276
    Hadrian V 1276
    John XXI 1276–7
    Nicholas III 1277–80
    Martin IV 1281–5
    Honorius IV 1285–7
    Nicholas IV 1288–92
    Celestine V 1294
    Boniface VIII 1294–1303
    Benedict XI 1303–4
    Clement V 1305–14
    John XXII 1316–34
    Benedict XII 1334–42
    Clement VI 1342–52
    Innocent VI 1352–62
    Urban V 1362–70
    Gregory XI 1370–78
    Urban VI 1378–89
    (Avignon Clement VII 1378–94)
    Boniface IX 1389–1404
    (Avignon Benedict XIII 1394–1423)
    Innocent VII 1404–6
    Gregory XII 1406–15
    Alexander V 1409–10
    John XXIII 1410–15
    Martin V 1417–31
    Eugenius IV 1431–47
    (Anti-pope Felix V 1439–49)
    Nicholas V 1447–55
    Calixtus III 1455–8
    Pius II 1458–64
    Paul II 1464–71
    Sixtus IV 1471–84
    Innocent VIII 1484–92
    Alexander VI 1492–1503
    Pius III 1503
    Julius II 1503–13
    Leo X 1513–21
    Hadrian VI 1522–3
    Clement VII 1523–34
    Paul III 1534–49
    Julius III 1550–55
    Marcellus II 1555
    Paul IV 1555–9
    Germany
    (*denotes also Holy Roman Emperor)
    Henry IV * 1056–1106
    Henry V * 1106–25
    Lothar III * 1125–37
    Conrad III 1138–52
    Frederick I * 1152–90
    Henry VI * 1190–97
    Philip of Swabia 1198–1208
    Otto IV * 1198–1214
    Frederick II * 1212–50
    Conrad IV 1250–54
    (Competed rule 1247–73)
    Rudolf I 1273–91
    Adolf of Nassau 1292–98
    Albert I 1298–1308
    Henry VII * 1308–13
    Louis IV * 1314–47
    Charles IV * 1346–78
    Wenzel 1378–1400
    Rupert 1400–1410
    Sigismund * 1410–37
    Albert II (I of Hungary) 1438–9
    Frederick III * 1440–93
    Maximilian * 1493–1519
    Charles V * 1519–55
    Byzantine Empire
    Alexius I 1081–1118
    John II 1118–43
    Manuel I 1143–80
    Alexius II 1180–83
    Andronicus I 1183–85
    Isaac II 1185–95; 1203–4
    Alexius III 1195–1203
    Alexius IV 1203–4
    Nicholas 1204
    Alexius V 1204
    Latin Empire of Constantinople:
    Baldwin I 1204–5
    Henry 1205–16
    Peter of Courtenay 1217–18
    Robert of Courtenay 1221–8
    Baldwin II 1228–61
    John of Brienne (co-emperor) 1231–7
    Michael VIII 1261–82
    Andronicus II 1282–1328
    Andronicus III 1328–41
    John V 1341–7, 1354–77, 1379–90, 1390–91
    John VI 1347–54
    Andronicus IV 1376–79
    John VII 1390
    Manuel II 1391–1425
    John VIII 1425–48
    Constantine XI 1448–53
    France
    Philip I 1060–1108
    Louis VI 1108–37
    Louis VII 1137–80
    Philip II 1180–1223
    Louis VIII 1223–6
    Louis IX 1226–70
    Philip III 1270–85
    Philip IV 1285–1314
    Louis X 1314–16
    John I 1316
    Philip V 1316–22
    Charles IV 1322–8
    Philip VI 1238–50
    John II 1350–64
    Charles V 1364–80
    Charles VI 1380–1422
    Charles VII 1422–61
    Louis XI 1461–83
    Charles VIII 1483–98
    Louis XII 1498–1515
    Francis I 1515–47
    England
    William I 1066–87
    William II 1087–1100
    Henry I 1100–1135
    Stephen 1135–54
    Henry II 1154–89
    Richard I 1189–99
    John 1199–1216
    Henry III 1216–72
    Edward I 1272–1307
    Edward II 1307–27
    Edward III 1327–77
    Richard II 1377–99
    Henry IV 1399–1413
    Henry V 1413–22
    Henry VI 1422–61
    Edward IV 1461–70
    Henry VI 1470–71
    Edward IV 1471–83
    Edward V 1483
    Richard III 1483–85
    Henry VII 1485–1509
    Henry