MAPS OF HISTORY · CRUSADES · BATTLES AND EVENTS · Frederick II regains JerusalemCrusades · TURNING POINT · 1229
Frederick II regains Jerusalem (1229)
On the Crusades map as “Frederick’s Jerusalem”
18 Feb 1229 — Emperor Frederick II regains Jerusalem by negotiation with Sultan al-Kamil, without a battle. Frederick has been excommunicated. The king condemned by the Pope is the one who takes the city.
When 18 Feb 1229 Type Turning point Chapter Fifth to Eighth Crusades (chapter 10 of Crusades)Atlas The Crusades, 1095–1291 TURNING POINT · THE CRUSADES, 1095–1291 These maps are reconstructed from published sources · Cliopatria v0.2.1 — historical political boundaries · Simon Barton — Crusading in Iberia, c. 1060–1212 · Israeli Institute of Archaeology — The Crusader Period · Steven Runciman — The Kingdom of Acre and the Later Crusades, Frederick II · The Metropolitan Museum of Art — The Crusades (1095–1291) · Natural Earth — physical reference geography · OpenStax — The Crusading Movement
Source details Cliopatria contributors / Seshat Global History Databank. CC BY 4.0 · Dated polygons selected; local transfers and shared frontier edges derived with documented historical event corrections. Simon Barton, The Cambridge History of the Crusades. Published summary consulted for dated conquests; no map copied Israeli Institute of Archaeology. Facts consulted; local treaty corridor independently reconstructed Steven Runciman, A History of the Crusades, volume III. Named places and treaty terms consulted; no prose or map copied Department of Medieval Art and The Cloisters, 2014. Facts consulted; no prose or image copied Natural Earth. Public domain OpenStax, World History Volume 1. CC BY 4.0 The 1229 source omits the inland treaty transfer. The Jaffa–Lydda–Jerusalem–Bethlehem corridor uses a disclosed 5 km cartographic margin, and the sanctuary remains excluded.
At some ports, source coastlines have offsets of several kilometers at their resolution. The original polygons are preserved, and the review record gives explicit coastal anchor tolerances.
reconstruction: 1028–1325 · reconstruction: 1040–1235 · reconstruction: 1099–1235 · reconstruction: 1202–1249 · reconstruction: 1210–1240 · reconstruction: 1216–1235 · reconstruction: 1220–1235 · reconstruction: 1227–1235 · reconstruction: 1227–1240 · reconstruction: 1227–1259 · reconstruction: 1229 · reconstruction: 1229 treaty · vector: 1072–1235 · vector: 1072–1249 · vector: 1072–1325 · vector: 1094–1235 · vector: 1177–1259 · vector: 1188–1235 · vector: 1188–1259 · vector: 1188–1271 · vector: 1192–1362 · vector: 1202–1235 · vector: 1202–1240 · vector: 1202–1249 · vector: 1202–1259 · vector: 1202–1284 · vector: 1206–1235 · vector: 1206–1240 · vector: 1206–1259 · vector: 1206–1271 · vector: 1206–1304 · vector: 1210–1249 · vector: 1210–1304 · vector: 1216–1235 · vector: 1216–1240 · vector: 1216–1249 · vector: 1216–1259 · vector: 1220–1235 · vector: 1220–1240 · vector: 1220–1249 · vector: 1220–1259 · vector: 1227–1235 · vector: 1227–1240 · vector: 1227–1249 · vector: 1229
Layer records and reconstruction methods
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