Poppo I of Blankenburg (c. 1095–1161 or 1164) probably came from the House of Reginbodonen and was

Count of Regenstein Regenstein, also ''Reinstein'', was a Lower Saxon noble family, which was named after the eponymous Regenstein Castle near Blankenburg on the edge of the Harz Mountains of central Germany. History In 1162 ''Cunradus Comes de Regenstein'' (Conr ...

Blankenburg Blankenburg may refer to: Places * Blankenburg am Harz, a German town in the district of Harz, Saxony-Anhalt * Blankenburg Castle (Harz), the castle in Blankenburg am Harz (see above) * Bad Blankenburg, a German town in the Saalfeld-Rudolstadt dis ...

in the Harz in central Germany. His father was Conrad, Count of Blankenburg. His uncle, Reinhard of Blankenburg, was the

Bishop of Halberstadt The Diocese of Halberstadt was a Roman Catholic diocese (german: Bistum Halberstadt) from 804 until 1648.

, and who probably paved the first steps for him. As the vassal of Emperor

Lothair of Supplinburg Lothair III, sometimes numbered Lothair II and also known as Lothair of Supplinburg (1075 – 4 December 1137), was Holy Roman Emperor from 1133 until his death. He was appointed Duke of Saxony in 1106 and elected King of Germany in 1125 before ...

he exercised count's rights in the

Harzgau The Harzgau was a medieval shire ('' Gau'') in the northeastern foorhils of the Harz mountains, part of the Eastphalia region of Saxony. It included the towns of Halberstadt, Quedlinburg, and Osterwieck, and was bounded by the Oker in the west, b ...

and was later recorded as a vassal of

Henry the Lion Henry the Lion (german: Heinrich der Löwe; 1129/1131 – 6 August 1195) was a member of the Welf dynasty who ruled as the duke of Saxony and Bavaria from 1142 and 1156, respectively, until 1180. Henry was one of the most powerful German p ...

. From 1128 he was given the title of ''

comes ''Comes'' ( ), plural ''comites'' ( ), was a Roman title or office, and the origin Latin form of the medieval and modern title "count". Before becoming a word for various types of title or office, the word originally meant "companion", either i ...

''. His county, which had probably been created by his in-law, Lothair of Supplinburg, was in the eastern

between the rivers Ilse and Bode. (Lothair was also an in-law of Burchard I of Loccum). He married Richenza of Boyneburg, the daughter of Count Siegfried III of Boyneburg. They had a son, Conrad, who was the first documented member of the

House of Regenstein Regenstein, also ''Reinstein'', was a Lower Saxon noble family, which was named after the eponymous Regenstein Castle near Blankenburg on the edge of the Harz Mountains of central Germany. History In 1162 ''Cunradus Comes de Regenstein'' (Conrad, ...

. Record show that Poppo I also had another son called Siegfred, who was noted for witnessing some of the charters of Duke Henry of Saxony and Bavaria, ''Urkundel HL'', nos 48, 52, and 60. The count also had another son called Reinhard, who settled in Paris as an academic. In 1163 as the brother-in-law of the late count, Siegfried IV of Boyneburg, who had died in 1144, he brought certain claims against Northeim Abbey, mediated by his wife, Richenza, before Henry the Lion, who had to uphold them. Henry the Lion later purchased the rights to this abbey from his sons.

References

External links

Medieval genealogy
Counts of the Holy Roman Empire 11th-century births 12th-century deaths Lower Saxon nobility {{Germany-count-stub