As already reported in Haplogroups of European kings and queens, Malmström et al. (2011) tested the mtDNA King Valdemar I of Sweden (1239–1302) and his brother, King Magnus III of Sweden (1240-1290). Both were found to belong to Y-DNA haplogroup I1 and mtDNA haplogroup Z1a.
The two kings were the children of Queen Ingeborg Eriksdotter (c. 1212-c. 1254), sister of King Eric XI of Sweden. Going up her matrilineal line, we find:
- Richeza of Denmark (c. 1180-1220), Queen of Sweden
-- Sophia of Minsk (c. 1140-1198), Queen of Denmark
--- Richeza of Poland (1116-1156), Queen of Sweden, then Princess of Minsk
---- Salomea of Berg (c. 1101-1144), Duchess of Poland
----- Adelaide of Mochental (1086-c. 1125)
------ Luitgarde of Zähringen (c. 1054-1119)
------- Richenza of Swabia
-------- Adelaide of Susa (c. 1016-1091)
--------- Bertha of Tuscany
Descendants of the above who can all be listed as members of haplogroup Z1a
Only margraves, princes, dukes, duchesses, kings and queens are listed. Kings and Queens are highlighted in bold.
Via Ingeborg Eriksdotter
- Rikissa Birgersdotter of Sweden, Queen of Norway (c. 1237–d. after 1288)
-- Prince Henry II of Werle (died 1308)
-- Prince Nicholas of Werle-Güstrow (died 1298)
-- Rixa of Werle (died 1317), Duchess of Brunswick-Lüneburg
--- Albert II of Brunswick-Lüneburg (c. 1294-1358), Bishop of Halberstadt
--- Henry III of Brunswick-Lüneburg (c. 1296-1363), Prince-Bishop of Hildesheim
--- Otto the Mild, Duke of Brunswick-Lüneburg (1292-1344)
--- Magnus I the Pious, Duke of Brunswick-Lüneburg (c. 1304-1369)
--- Ernest, Duke of Brunswick-Göttingen (c. 1305-1367)
- King Valdemar of Sweden (1239-1302)
- King Magnus III of Sweden (1240-1290)
- Catherine Birgersdotter of Bjelbo, Princess of Anhalt-Zerbst (1245-1289)
-- Albert I, Prince of Anhalt-Zerbst (d. 1316)
- Duke Eric Birgersson (c. 1250-1275)
- Ingeborg Birgersdotter of Bjelbo, Duchess of Saxony (c. 1253-1302)
-- Elisabeth of Saxe-Lauenburg, Duchess of Schleswig (c. 1274–before 1306)
-- John II, Duke of Saxe-Lauenburg (c. 1275-1322)
-- Eric I, Duke of Saxe-Lauenburg (c.1280–1360)
-- Albert III, Duke of Saxe-Lauenburg (1281–1308)
- Benedict, Duke of Finland (1254-1291), Bishop of Linköping
Via Richeza of Denmark
- Marianna Eriksdotter, Duchess of Pomerania
- Ingeborg Eriksdotter
- King Eric XI of Sweden (1216–1250)
Via Sophia of Minsk
- King Canute VI of Denmark (1163–1202)
- King Valdemar II of Denmark (1170–1241)
- Richeza of Denmark, Queen of Sweden
- Helena of Denmark, Duchess of Brunswick-Luneburg (died 1233)
-- Otto I, Duke of Brunswick-Lüneburg (c. 1204-1252)
- Ingeborg of Denmark, Queen of France (1175–1236)
Via Richeza of Poland
- King Canute V of Denmark (c. 1129-1157)
- Vladimir, Prince of Minsk
- Vasilko, Prince of Logoysk or Lahojsk
Via Salomea of Berg
- Richeza of Poland (1116-1156)
- Bolesław IV the Curly, Duke of Masovia, High Duke of Poland (c. 1122-1173)
- Mieszko III the Old, Duke of Greater Poland (c. 1125-1202)
- Henry, Duke of Sandomierz (1127/32-1166)
- Dobroniega of Poland, Margravine of Lusatia (c. 1129 - d. before 1160)
- Judith of Poland, Margravine of Brandenburg (1130/5-1171/5)
-- Otto II, Margrave of Brandenburg (after 1147-1205)
- Agnes of Poland, Grand Princess of Kiev (1137 - d. after 1182)
-- Roman the Great, Grand Prince of Kiev (c. 1152-1205)
-- Sviatoslav Mstislavich, Prince of Brest
-- Vsevolod Mstislavich of Volhynia, Prince of Belz, Prince of Volodymyr-Volynsky (died 1196)
- Casimir II the Just (1138-1194), Duke of Sandomierz from 1173, High Duke of Poland
The two kings were the children of Queen Ingeborg Eriksdotter (c. 1212-c. 1254), sister of King Eric XI of Sweden. Going up her matrilineal line, we find:
- Richeza of Denmark (c. 1180-1220), Queen of Sweden
-- Sophia of Minsk (c. 1140-1198), Queen of Denmark
--- Richeza of Poland (1116-1156), Queen of Sweden, then Princess of Minsk
---- Salomea of Berg (c. 1101-1144), Duchess of Poland
----- Adelaide of Mochental (1086-c. 1125)
------ Luitgarde of Zähringen (c. 1054-1119)
------- Richenza of Swabia
-------- Adelaide of Susa (c. 1016-1091)
--------- Bertha of Tuscany
Descendants of the above who can all be listed as members of haplogroup Z1a
Only margraves, princes, dukes, duchesses, kings and queens are listed. Kings and Queens are highlighted in bold.
Via Ingeborg Eriksdotter
- Rikissa Birgersdotter of Sweden, Queen of Norway (c. 1237–d. after 1288)
-- Prince Henry II of Werle (died 1308)
-- Prince Nicholas of Werle-Güstrow (died 1298)
-- Rixa of Werle (died 1317), Duchess of Brunswick-Lüneburg
--- Albert II of Brunswick-Lüneburg (c. 1294-1358), Bishop of Halberstadt
--- Henry III of Brunswick-Lüneburg (c. 1296-1363), Prince-Bishop of Hildesheim
--- Otto the Mild, Duke of Brunswick-Lüneburg (1292-1344)
--- Magnus I the Pious, Duke of Brunswick-Lüneburg (c. 1304-1369)
--- Ernest, Duke of Brunswick-Göttingen (c. 1305-1367)
- King Valdemar of Sweden (1239-1302)
- King Magnus III of Sweden (1240-1290)
- Catherine Birgersdotter of Bjelbo, Princess of Anhalt-Zerbst (1245-1289)
-- Albert I, Prince of Anhalt-Zerbst (d. 1316)
- Duke Eric Birgersson (c. 1250-1275)
- Ingeborg Birgersdotter of Bjelbo, Duchess of Saxony (c. 1253-1302)
-- Elisabeth of Saxe-Lauenburg, Duchess of Schleswig (c. 1274–before 1306)
-- John II, Duke of Saxe-Lauenburg (c. 1275-1322)
-- Eric I, Duke of Saxe-Lauenburg (c.1280–1360)
-- Albert III, Duke of Saxe-Lauenburg (1281–1308)
- Benedict, Duke of Finland (1254-1291), Bishop of Linköping
Via Richeza of Denmark
- Marianna Eriksdotter, Duchess of Pomerania
- Ingeborg Eriksdotter
- King Eric XI of Sweden (1216–1250)
Via Sophia of Minsk
- King Canute VI of Denmark (1163–1202)
- King Valdemar II of Denmark (1170–1241)
- Richeza of Denmark, Queen of Sweden
- Helena of Denmark, Duchess of Brunswick-Luneburg (died 1233)
-- Otto I, Duke of Brunswick-Lüneburg (c. 1204-1252)
- Ingeborg of Denmark, Queen of France (1175–1236)
Via Richeza of Poland
- King Canute V of Denmark (c. 1129-1157)
- Vladimir, Prince of Minsk
- Vasilko, Prince of Logoysk or Lahojsk
Via Salomea of Berg
- Richeza of Poland (1116-1156)
- Bolesław IV the Curly, Duke of Masovia, High Duke of Poland (c. 1122-1173)
- Mieszko III the Old, Duke of Greater Poland (c. 1125-1202)
- Henry, Duke of Sandomierz (1127/32-1166)
- Dobroniega of Poland, Margravine of Lusatia (c. 1129 - d. before 1160)
- Judith of Poland, Margravine of Brandenburg (1130/5-1171/5)
-- Otto II, Margrave of Brandenburg (after 1147-1205)
- Agnes of Poland, Grand Princess of Kiev (1137 - d. after 1182)
-- Roman the Great, Grand Prince of Kiev (c. 1152-1205)
-- Sviatoslav Mstislavich, Prince of Brest
-- Vsevolod Mstislavich of Volhynia, Prince of Belz, Prince of Volodymyr-Volynsky (died 1196)
- Casimir II the Just (1138-1194), Duke of Sandomierz from 1173, High Duke of Poland
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