Reinbern was the only bishop of the short-lived Diocese of Kolberg) (1000-~1007).

Reinbern was born in the Hassegau

Hassegau

The Hassegau was an early medieval shire in the Eastphalia region of the Duchy of Saxony. It was located in the corner between the Saale , Unstrut , and Wipper rivers; its most important town was Merseburg...

 area of the medieval Duchy of Saxony

Duchy of Saxony

The medieval Duchy of Saxony was a late Early Middle Ages "Carolingian stem duchy" covering the greater part of Northern Germany. It covered the area of the modern German states of Bremen, Hamburg, Lower Saxony, North Rhine-Westphalia, and Saxony-Anhalt and most of Schleswig-Holstein...

. When Holy Roman Emperor

Holy Roman Emperor

The Holy Roman Emperor is a term used by historians to denote a medieval ruler who, as German King, had also received the title of "Emperor of the Romans" from the Pope...

 Otto III met with his friend, the Polish

Poles

thumb|right|180px|The state flag of [[Poland]] as used by Polish government and diplomatic authoritiesThe Polish people, or Poles , are a nation indigenous to Poland. They are united by the Polish language, which belongs to the historical Lechitic subgroup of West Slavic languages of Central Europe...

 duke Boleslaw I in the Congress of Gniezno

Congress of Gniezno

The Congress of Gniezno was an amical meeting between the Polish duke Bolesław I Chrobry and Emperor Otto III, which took place at Gniezno on March 11, 1000...

 (Gnesen), the Archbishopric of Gniezno was founded. One of Gniezno's subordinated bishoprics was the Diocese of Kołobrzeg., Its purpose was to advance the Christianization

Christianization

The historical phenomenon of Christianization is the conversion of individuals to Christianity or the conversion of entire peoples at once...

 of the pagan Pomeranians that shortly before had been subdued by the Poles. Reinbern was made bishop. It is documented that he "baptized" the Baltic Sea

Baltic Sea

The Baltic Sea is a brackish mediterranean sea located in Northern Europe, from 53°N to 66°N latitude and from 20°E to 26°E longitude. It is bounded by the Scandinavian Peninsula, the mainland of Europe, and the Danish islands. It drains into the Kattegat by way of the Øresund, the Great Belt and...

 by spilling Holy Oil

Holy oil

Holy oil may refer to:* Holy anointing oil, a perfume used to anoint the vessels of the Jewish Tabernacle* Holy Oil , a consecrated oil used in the administration of certain sacraments and ecclesiastical functions...

 and Holy Water

Holy Water

Holy Water is the ninth studio album by hard rock band Bad Company, and their third with Brian Howe in place of Paul Rodgers as lead vocalist, released in June 1990. The singles on the album all received moderate radio airplay. These included "Holy Water", "Boys Cry Tough", "Walk Through Fire", and...

 into the sea. He also demolished shrines of pagan gods in Pomerania. Yet, after his bishopric was driven out during a pagan uprising, he returned to Boleslaw's court. In 1009, he accompanied Boleslaw to the marriage arranged between Boleslaw's daughter and Sviatopolk

Sviatopolk I of Kiev

Sviatopolk I Vladimirovich was the Kniaz' of Turov and Velikii Kniaz of Kiev whose paternity and guilt in the murder of brothers are disputed.-Early life:Sviatopolk's mother was a Greek nun captured by Sviatoslav I in Bulgaria and married to his lawful heir...

, prince of Turov

Prince of Turov

The Prince of Turov was the kniaz, the ruler or sub-ruler, of the Rus' Principality of Turov, a lordship based on the city of Turov, now Turaŭ in Homiel Voblast, Belarus....

 (Turaŭ) in the Kievan Rus'

Kievan Rus'

Kievan Rus was a medieval polity in Eastern Europe, from the late 9th to the mid 13th century, when it disintegrated under the pressure of the Mongol invasion of 1237–1240....

, where an internal Kievian crisis involving Boleslaw's daughter led to the arrest of Reinbern by prince Vladimir

Vladimir I of Kiev

Vladimir Sviatoslavich the Great Old East Slavic: Володимѣръ Свѧтославичь Old Norse as Valdamarr Sveinaldsson, , Vladimir, , Volodymyr, was a grand prince of Kiev, ruler of Kievan Rus' in .Vladimir's father was the prince Sviatoslav of the Rurik dynasty...

. Soon afterwards, he died imprisoned in 1012.