Atlas of Battles

siege, medieval

Siege of Tortona

Siege of Tortona was a siege conducted on 13 February 1155 at Tortona, in what is now Italy; it lasted 2 months. It was part of Q1140335. The recorded result: Imperial victory.

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Siege of Tortona
Andrea Gastaldi, Public domain, via Wikimedia Commons.
Fought13 February 1155lasted 2 months
WhereTortona, Italy44.894N, 8.866E
OutcomeImperial victory
BelligerentsHoly Roman Empire; Commune of Pavia; Margraviate of MontferratagainstCommune of Tortona; Commune of Milan
Casualties and lossesUnknownandGarrison captured; City burned
Part ofQ1140335

Where it sits in Q1140335

Battle of Volta Mantovana, 1080Battle of Sorbara, 1084Battle of Bianello, 1092Battle of Santa Lucia delle Spianate, 1145Battle of the Vernavola, 1154Siege of Tortona, 1155Siege of Milan, 1158Siege of Crema, 1159Battle of Siziano, 1159Battle of Carcano, 1160Siege of Milan, 1161Battle of Monte Porzio, 1167Siege of Alessandria, 1174Battle of Legnano, 1176Battle of Calcinato, 1201Battle of Casei Gerola, 1213Battle of Cortenuova, 1237Siege of Brescia, 1238Siege of Faenza, 1240Battle of Giglio, 1241Siege of Viterbo, 1243Battle of Florence, 1248Battle of Parma, 1248Battle of Fossalta, 1249Battle of Foggia, 1254Battle of Cassano, 1259Battle of Montaperti, 1260Battle of Colle Val d'Elsa, 1269Battle of Roccavione, 1275Battle of Desio, 1277Battle of Sperlinga, 1283Battle of Pieve al Toppo, 1288Battle of Campaldino, 1289Battle of Catanzaro, 1297Siege of Syracuse, 1298Siege of Pavia, 1302Battle of Gaggiano, 1313Siege of Pavia, 1315Battle of Ponte San Pietro, 1315Siege of Mirandola, 1321Battle of Bardi, 1321Battle of Gorgonzola, 1323Battle of Vaprio d'Adda, 1324Battle of Altopascio, 1325Battle of Zappolino, 1325Battle of Gamenario, 1345Battle of Casorate, 1356Battle of Solara, 1363Battle of Alessandria, 139110801391Siege of Tortona, 1155
49 placed engagements of Q1140335 in time order; taller ticks are more widely documented. Each tick is a link.

Record

Date13 February 1155
to 18 April 1155
PlaceTortona, Italy
44.894N, 8.866E
KindSiege, medieval
Strength5,400–7,200+; ----5,400–7,200; 1,800 knights; Pavian militia; Montferrat's forces300+; ----100 knights; 200 archers; Tortonian militia; Malaspina's men
Casualties and lossesUnknownGarrison captured; City burned
Commanders
Siege of TortonaSiege of TortonaBattle of Casei GerolaBattle of MarengoFirst Battle of MarengoSecond Battle of MarengoBattle of NoviBattle of Casei GerolaBattle of MarengoBattle of NoviMilanTurinNiceGenoaVeronaPisaBergamoLugano100 km44.894N, 8.866E
The recorded site, with the nearest other engagements in the atlas. Present-day coastlines, rivers and borders; towns from Natural Earth.

Nearest engagements

In the same war

Siege of Tortona is one of 438 engagements of the 12th century in the atlas and one of 942 in present-day Italy.

Sources

Identity, coordinates, dates and the war from Wikidata Q55633165, released under CC0. Result, belligerents, commanders, strength and casualties from the infobox of the English Wikipedia article Siege of Tortona, revision 1370745883, read 2026-11-14, licensed CC BY-SA 4.0; the article's text is not reproduced here. Present-day country and state from Natural Earth. Dates before 1582 follow the Julian calendar as recorded.