Low Countries Rulers

Kingdom of the Belgians¹
House of Saxe-Coburg-Gotha
  Leopold I (1831-1865)&nbsp
  Leopold II (1865-1909, King of the Congo Free State: 1885-1908)&nbsp
  Albert I (1909-1934)&nbsp
  Leopold III (1934-1951, in exile: 1940-1945)&nbsp
  Baudouin (1951-1993)&nbsp
  Albert II (1993- )&nbsp

County of Holland²
First House of Holland
  Dirk I (916-939)&nbsp
  Dirk II (939-988)&nbsp
  Arnulf (988-993)&nbsp
  Dirk III (993-1039)&nbsp
  Dirk IV (1039-1049)&nbsp
  Floris I (1049-1061)&nbsp
  Dirk V (1061-1091)&nbsp
  Floris II, the Fat (1091-1121)&nbsp
  Dirk VI (1121-1157)&nbsp
  Floris III (1157-1190)&nbsp
  Dirk VII (1190-1203)&nbsp
  William I (1203-1222)&nbsp
  Floris IV (1222-1234)&nbsp
  William II (1234-1256)&nbsp
  Floris V (1256-1296)&nbsp
  John I (1296-1299)&nbsp
House of Hainault
  John II (1299-1304)&nbsp
  William III, the Good (1304-1337)&nbsp
  William IV (1337-1345)&nbsp
  Margaret (1345-1354)&nbsp
House of Bavaria
  William V (1354-1358)&nbsp
  Albert (1389-1404) (regent 1358-1389)&nbsp
  William VI (1404-1417)&nbsp
  Jacqueline (1417-1433)&nbsp
  Holland and Hainualt united with Burgundy in 1433

County of Hainault²
House of Flanders
  Baldwin I of Mons (1051-1070)&nbsp
  Arulf, the Unfortunate (1070-1071)&nbsp
  Baldwin II (1071-1098)&nbsp
  Baldwin III (1098-1120)&nbsp
  Baldwin IV of Mons (1120-1171)&nbsp
  Baldwin V (1171-1195)&nbsp
  Union with Flanders between 1195-1278
House of Avesnes
  John (1280-1304)&nbsp
  Union with Holland in 1304

Kingdom of the Netherlands³
House of Orange-Nassau – Stadholders of the Netherlands
  William I, the Silent (1572-1584)&nbsp
  Maurice (1585-1625)&nbsp
  Frederick Henry (1625-1647)&nbsp
  William II (1647-1650)&nbsp
  Interregnum (1650-1672)
  William III (1672-1702)&nbsp
  Interregnum (1702-1747)
  William IV (1747-1751)&nbsp
  William V (1751-1795)&nbsp
House of Bonaparte – Kingdom of Holland
  Batavian Republic (1795-1806)
  Louis Napoleon (1806-1810)&nbsp
  Union with France (1810-1813)
House of Orange-Nassau – Kingdom of the Netherlands
  William I (1813-1840)&nbsp
  William II (1840-1849)&nbsp
  William III (1849-1890)&nbsp
  Wilhelmina (1890-1948)&nbsp
  Juliana (1948-1980)&nbsp
  Beatrix (1980- )&nbsp

County of Flanders⁴
First House of Flanders
  Baldwin I, Iron Arm (864-879)&nbsp
  Baldwin II, the Bald (879-918)&nbsp
  Arnulf I, the Great (918-965)&nbsp
  Baldwin III (co-regent 958-965)&nbsp
  Arnulf II, the Younger (965-988)&nbsp
  Baldwin IV, the Bearded (988-1035)&nbsp
  Baldwin V of Lille (1035-1067)&nbsp
  Baldwin VI of Mons (1067-1070)&nbsp
  Arnulf III (1070-1071)&nbsp
  Robert I, the Frisian (1071-1093)&nbsp
  Robert II of Jerusalem (1093-1111)&nbsp
  Baldwin VII, Hapkin (1111-1119)&nbsp
House of Denmark
  Charles the Good (1119-1127)&nbsp
House of Normandy
  William Clito (1127-1128)&nbsp
House of Lorraine
  Thierry of Alsace (1128-1168)&nbsp
  Philip (1168-1191) (co-regent 1157)&nbsp
House of Hainault
  Baldwin VIII (1191-1194)&nbsp
  Baldwin IX (1194-1205)&nbsp
  Joan (1205-1244)&nbsp
  Margaret I (1244-1278)&nbsp
House of Dampierre
  Guy (1278-1305)&nbsp
  Robert III of Béthune (1305-1322)&nbsp
  Louis I of Nevers (1322-1346)&nbsp
  Louis II of Male (1346-1384)&nbsp
  Margaret II (1384-1405)&nbsp
  Union with Burgundy in 1405

Duchy of Lower Lorraine⁵
House of Verdun
  Godfrey I (1012-1023)&nbsp
  Gozelo I (1023-1044)&nbsp
  Gozelo II (1044-1046)&nbsp
House of Luxemburg
  Frederick (1046-1065)&nbsp
House of Verdun
  Godfrey II, the Bearded (1065-1069)&nbsp
  Godfrey III (1069-1076)&nbsp
Salian House
  Conrad (1076-1087)&nbsp
House of Boulogne
  Godfrey IV of Bouillon (1087-1100)&nbsp
House of Limburg
  Henry I (1100-1106)&nbsp

County and Duchy of Luxemburg⁶
House of the Moselle
  Sigefrid (963-998)&nbsp
  Henry I (998-1026)&nbsp
  Henry II (1026-1047)&nbsp
  Gilbert (1047-1059)&nbsp
  Conrad I (1059-1086)&nbsp
  Henry III (1086-1096)&nbsp
  William (1096-1131)&nbsp
  Conrad II (1131-1136)&nbsp
House of Namur
  Henry IV, the Blind (1136-1196)&nbsp
  Ermesind (1196-1247)&nbsp
House of Limburg
  Henry V, the Great (1247-1281)&nbsp
  Henry VI (1281-1288)&nbsp
  Henry VII (1288-1310)&nbsp
  John, the Blind (1310-1346)&nbsp
  Charles (1346-1353)&nbsp
Dukes of Luxemburg
  Wenceslas I (1353-1383)&nbsp
  Wenceslas II (1383-1419)&nbsp
  Sigismund (1419-1437)&nbsp
House of Habsburg
  Albert of Austria (1437-1439)&nbsp
House of Wettin
  William of Saxony (1439-1443)&nbsp
  Union with Burgundy in 1443

Grand Duchy of Luxemburg⁷
House of Orange-Nassau
  Guillaume I (1815-1840)&nbsp
  Guillaume II (1840-1849)&nbsp
  Guillaume III (1849-1890)&nbsp
House of Nassau-Weilburg
  Adolf (1890-1905)&nbsp
  William IV (1905-1912)&nbsp
  Marie Adelaide (1912-1919)&nbsp
  Charlotte (1919-1964, in exile: 1940-1945)&nbsp
  John I (1964-2000)&nbsp
  Henry Albert (2000- )&nbsp

1. [S38] John Morby, Dynasties of the World (Oxford, U.K.: Oxford University Press, 1989), page 97.
2. [S38] ibid., page 96.
3. [S38] ibid., page 90.
4. [S38] ibid., page 91.
5. [S38] ibid., page 92.
6. [S38] ibid., page 97.
7. [S38] ibid., page 93.

Note that Morby gives all names and titles in English, rather than the original language.