List of states in the Holy Roman Empire (M)

This is a list of states in the Holy Roman Empire beginning with the letter M:

Name Type Circle Bench Formed Notes
Magdeburg 967: Archbishopric
1180: HRE Prince-Archbishopric
Low Sax EC 968: diocese est.
1180: Partitioned from the older Duchy of Saxony
805: 1st mention of Magdeburg
Before 1180: Part of older Duchy of Saxony, till emperor deposed Henry the Lion
1180: Gained Imperial immediacy at the carve-up of the older Duchy of Saxony
1648:Secularized as a duchy to Brandenburg
Magdeburg Burgraviate
Mahlberg Lordship
Maienfeld Lordship
Mainz Archbishopric
1356: HRE Prince-Elector
El Rhin EL 962 1512: Electoral Rhenish Circle
1803: Merged with Bp. of Regensburg
Mainz Free City 1244 1462: Annexed by Abp. of Mainz
Manderscheid
Count of Manderscheid, Blankenheim & Gerolstein
Lordship
1453: County
1460: HRE County
c934 1270: To Lords of Manderscheid
1488: Partitioned into Manderscheid-Blankenheim-Gerolstein, Manderscheid-Kail (extinct 1762) and Manderscheid-Schleiden
1760: Passed by marriage to Counts of Sternberg
1802: Acquired Abbeys of Schussenried and Weissenau for loss to France of Blankenheim, Junkerath, Gerolstein and Dollendorf1806: Mediatised to Wurttemberg
Manderscheid-Schleiden County 1488: Partitioned from Manderscheid 1647: Annexed to Kall
Mansfeld
HRE Prince and Prince of Fondi, Count and Lord of Mansfeld, Noble Lord of Heldrungen, Seeburg and Schraplau, Lord of the Lordship of Dobrzisch, Neuhaus and Arnstein
County Upp Sax 1051 973: 1st mention of Mansfeld
1079: Mansfeld appointed count in northern Hattgau
1229: Mansfeld male line died out; inherited by Counts of Querfurt by female inheritance
Acquired Lordship of Bornstedt
1501: Division into Mansfeld-Vorderort, Mansfeld-Mittelort, and Mansfeld-Hinterort
Partitions annexed by Mansfeld-Bornstedt
1563: Mansfeld-Vorderort division into Arnstein (extinct 1615), Artern (extinct 1631), Bornstedt (extinct 1780), Eisleben (extinct 1710), Friedeburg (extinct 1626) and Heldrungen (extinct 1572) lines
1580: Lost imperial immediacy
1602: Mansfeld-Mittelort line died out
1666: Mansfeld-Hinterort line died out
1771: Marriage of heiress of Mansfeld-Vordeort-Bornstedt with the Prince of Colloredo; founding of Colloredo-Mansfeld line
1780: Mansfeld-Vorderort line died out; territory annexed to Saxony
Marchtal Abbacy Swab 1793: Council of Princes
Mark 1198: County Low Rhen PR 1160: Split off from Berg 1368: United with Cleves
1521: United with Berg and Cleves
1609: War of Succession
1614: Annexed to Brandenburg
1666: Annexation by Brandenburg generally recognized
Martinstein Lordship
Massa (Malaspina) Lordship
1662: Duchy of Massa and Principality of Carrara
1797-1814: French occupation
Matsch HRE County 1505: Line died out
Maulbronn RA
Maursmunster Imperial Abbey
Mechelen (Malines) Lordship Burg c950: Fief of Bishop of Liège 1356: To Count of Flanders
Passed to Habsburg
1512: Burgundian Circle
Mecklenburg
Grand Duke of Mecklenburg, Prince of the Wends, Schwerin & Ratzeburg, Count of Schwerin, Lord of the Lands of Rostock & Stargard
1170: Principality
1348: Duchy
1815: Grand Duchy
Low Sax PR 1139 1229: Partitioned into Mecklenburg, Werle, Rostock and Parchim
1304: Princes of Mecklenburg acquired Stargard as marriage dowry
1314: Prince of Rostock line died out
1416: Prince of Parchim line died out
1323: Acquired Rostock
1353: Partitioned
1358: Purchase of Schwerin from the Counts of Tecklenburg and Schwerin
1436: Acquisition of the lands of the extinct branch of Werle
1471: Mecklenburg-Stargard line died out; Mecklenburg reunited
1536: Division into Mecklenburg-Schwerin and Mecklenburg-Gustrow
1582: HRE Council of Princes
1610: Mecklenburg principalities reunited
1621: Partitioned into Mecklenburg-Schwerin and Mecklenburg-Güstrow
1628: Dukes of Mecklenburg placed under an imperial ban
1629: To Albert of Wallenstein
1631: Dukes of Mecklenburg restored to their lands by Gustavus Adolphus of Sweden
1648: Acquired secularized Bishoprics of Schwerin and Ratzeburg
1808: Confederation of the Rhine
1815: German Confederation
Mecklenburg-Güstrow Duchy Low Sax PR 1621: Created on partition of D. of Mecklenburg 1582: HRE Council of Princes
1695: Mecklenburg-Gustrow line became extinct
1701: Partitioned between Mecklenburg-Schwerin and Mecklenburg-Strelitz
Mecklenburg-Schwerin
Grand Duke of Mecklenburg, Prince of the Wendes, Schwerin & Ratzeburg, Count of Schwerin, Lord of the Lands of Rostock and Stargard
1621: Duchy
1815: Grand Duchy
Low Sax PR 1621: Created on partition of D. of Mecklenburg 1582: HRE Council of Princes
1808: Joined Confederation of the Rhine
1815: Joined German Confederation
1867: Joined North German Confederation
1871: Joined the German Empire
Mecklenburg-Strelitz
Grand Duke of Mecklenburg, Prince of the Wendes, Schwerin and Ratzeburg, Count of Schwerin, Lord of the Lands of Rostock and Stargard
1701: Duchy
1815: Grand Duchy
Low Sax PR 1701:
Created on partition of D. of Mecklenburg-Güstrow
1808: Joined Confederation of the Rhine
1815: Joined German Confederation
1867: Joined North German Confederation
1871: Joined the German Empire
Megen HRE County 1145: 1st mention of Free Imperial County of Megen
1795: French occupation
1801: To Batavian Republic
Includes city of Megen and villages of Haren and Macharen
Meissen Bishopric 948 1559: Secularized to Saxe-Meissen
Meissen 1088: Margraviate 928 1440: Partitioned between Bp. of Meissen, D. of Saxe-Wittenberg and Lgv. of Thuringia
Memmingen Imperial City Swab SW 1286 1803: Mediatized to Bavaria
Mergentheim 1200s: Bailiwick (Ballei) of the Teutonic Order
1805: Principality
1058: 1st mention of Mergentheim
1200s: Counts of Hohenlohe assigned Mergentheim estates to Teutonic Order
1500: Franconian Circle
1805: Raised to Principality in Treaty of Pressburg
Removed from Teutonic Order, given to Empire of Austria
1809: Promised to and annexed by Kingdom of Württemberg, from Napoleon
1810: Austria dropped all claims
Merseburg 968: Bishopric 968 850: 1st mention of Merseburg
1561: Bishopric suppressed and passed to Saxony<nr>1565: Secularized to Saxony
1656-1738: Seat of Dukes of Saxe-Merseburg
1815: To Prussia
Meßkirch (Messkirch) Lordship Swab 1080: 1st mention of Messkirch
To Counts of Rohrdorf
1210: Sold to Truchsess of Waldburg
To Counts of Zimmern
Inherited through marriage by Counts of Helfenstein, Lords of Gundelfingen
1627: To Furstenberg
1806: To Grand Duchy of Baden
Metz 500s: Bishopric Upp Rhen 945, 1047, 1152: Annexed the Metzgau piecemeal 1558: Annexed to France
1648: Formally ceded to France
Metz Imperial City Upp Rhen 1207 1552: Annexed to France
Millendonk (Myllendonk) Lordship
1700: HRE Lordship
Low Rhen 1263: Passed to Pesch Millendonk family
1268: Under overlordship of Guelders
1279: Under overlordship of Cologne
Passed to Reifferscheid
1350: To Mirlar
Inherited by Bronckhorst
1682/1690: To Dukes of Croy
1694: To Countess of Berlepsch
1700: To Counts of Ostein (by female inheritance)
1794: French occupation
1815: To Prussia
Mindelheim Lordship
HRE Principality of Mindelheim and Schwabegg
1704: To Dukes of Marlborough, Lost 1714 to the Elector of Bavaria under Treaty of Utrecht
Minden 803: Bishopric
1180: HRE Prince-Bishopric
Low Rhen EC 977: diocese est.
1180: Partitioned from the older Duchy of Saxony
Before 1180: Part of older Duchy of Saxony, till emperor deposed Henry the Lion
1180: Gained Imperial immediacy at the carve-up of the older Duchy of Saxony
1636: Swedish occupation
1648: By Treaty of Westphalia, secularized as a Principality of Minden
Minden Principality Low Rhen PR 1648: Secularized from Bp. of Minden Held by Brandenburg
1807: To Kingdom of Westphalia
1815: To Prussia
Moers (Mors) Lordship
c1240: County
1706: Principality
Low Rhen c1150 1493: Passed to Wied-Runke
1519: Passed to Neuenahr
1601: Inherited by Nassau-Orange
1702: Inherited by Brandenburg-Prussia
1794: French occupation
1815: To Prussia
Mollwitz (Małujowice) Principality
Mondsee RA in Austria
Mons (Bergen) County 980: Partitioned from counsthip of Hainaut 1071: Merged back into Hainaut
Monschau Barony 1221 1435: Annexed to Jülich
Montbéliard (Mompelgard) 1000s: HRE County
Princely County
None 1397-1793: Passed by marriage to Counts of Wurttemberg
1793: Annexed to France
Montechiarugolo County 1180: Partitioned from Guastalla 1612: Acquired by the Duchy of Parma
Montfort County 1180: Partitioned from Tübingen Descended from Counts Palatine of Tubingen
1160: Marriage of Hugo of Tubingen and Elizabeth, heiress of Bregenz
Acquired Bludenz
Acquired Bregenz (extinct 1523)

Acquired Lordship of Feldkirch (line extinct 1390)
Acquired Lordship of Heiligenberg
Acquired Herrenberg
Acquired Langenargen
Acquired Pfullendorf
Acquired Rheinegg
Acquired Rothenfels
Acquired Sargans
Acquired Lordship of Tettnang (line extinct 1779)
Acquired Tosters
Acquired Tubingen
Acquired Vaduz
Acquired Wasserburg
Acquired Werdenberg
Acquired Zollern
1780: Sold to Austria to pay debts
1787: Montfort dynasty died out
Montfort-Montfort County 1482: Partitioned from Montfort-Stadeck 1780: Divided between Austria and Württemberg
Mosbach Imperial Free City
Mötzkirch Lordship 1495: Partitioned from Zimmern 1594: Annexed to Helffenstein
Mühlhausen Imperial City Low Sax RH 1180 1803: Mediatized to Brandenburg
Mulhouse Imperial City 1798: To France
Münchenroth Imperial Abbey Swab SP 1126 1497: Imperial immediacy
1803: Secularized
Münster (Munster) 791: Bishopric
1134: Prince-Bishopric
1180: HRE Prince-Bishopric
Low Rhen EC 1180: Partitioned from the older Duchy of Saxony 1122: Acquired County of Kappenberg as fief of the older Duchy of Saxony
c1170: Acquired Lordship of Stromberg as fief of the older Saxony
Before 1180: Part of older Saxony, till emperor deposed Henry the Lion
1180: Gained Imperial immediacy at the carve-up of the older Saxony
1252: Acquired Lordship of Vechta from Ravensberg
1269: Purchased County of Horstmar
1310-1359: Purchased eastern half of Lordship of Lohn
1400: Acquired Ahaus in pledge
1793: Council of Princes
1803: Secularized to Prussia, Arenberg, Looz, Salm and Croy
Münster Imperial Free City Upp Rhen 1648: Annexed to France
Murbach Imperial Abbey
Muri Abbacy