Albert I may refer to:

* Albert I of Belgium ( 1875 – 1934 ), third King of the Belgians

* Albert I of Brandenburg ( c. 1100 – 1170 ), first Margrave of Brandenburg

* Albert I, Count of Namur ( c. 950 – 1011 ), a Belgian count

* Albert I, Count of Vermandois ( 917 – 987 ), Count of Vermandois

* Albert I, Duke of Brunswick-Lüneburg ( 1236 – 1279 ) second Duke of Brunswick-Lüneburg

* Albert I, Prince of Anhalt-Zerbst ( d. 1316 )

* Albert I, Duke of Prussia ( 1490 – 1568 ), first Duke of Prussia

* Albert I of Käfernburg ( died 1232 ), Archbishop of Magdeburg

* Albert I, Prince of Monaco ( 1848 – 1922 )

* Albert I Kalonji Ditunga ( born 1919 or 1929 )

* Albert I, the first monkey in outer space ( 1948 )

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Albert the Bear (; c. 1100 – 18 November 1170 ) was the first Margrave of Brandenburg ( as Albert I ) from 1157 to his death and was briefly Duke of Saxony between 1138 and 1142.

Albert was a loyal vassal of his relation, Lothar I, Duke of Saxony, from whom, about 1123, he received the Margraviate of Lusatia, to the east ; after Lothar became King of the Germans, he accompanied him on a disastrous expedition to Bohemia in 1126, when he suffered a short imprisonment.

* Albert II of Germany ( 1397 – 1439 ), King of Germany, Hungary, Croatia and Bohemia, Duke of Austria

When Charles left Germany a few weeks later, Albert renewed his depredations in Franconia.

After some initial success in his efforts to take possession, Albert was driven from Saxony, and also from his Northern march by Henry, and compelled to take refuge in south Germany.

# REDIRECT Albert I of Germany

Although Albert has received relatively little recognition in German history, his dissolution of the Teutonic State caused the founding of the Duchy of Prussia ( and also the Hohenzollern dynasty ), which would eventually become arguably the most powerful German state and instrumental in uniting the whole of Germany.

Albert is therefore often seen as the father of the Prussian nation, and even as indirectly responsible for the unification of Germany.

* 1397 – Albert II of Germany ( d. 1439 )

Ernest, Elector of Saxony ( 1464 – 1486 ), Frederick II, Elector of Saxony ( 1428 – 1464 ) and Albert III, Duke of Saxony ( 1486 – 1500 ); Fürstenzug, Dresden, Germany

In 1488 he was appointed Governor of the Netherlands ( until 1493 ) and marched with the imperial forces to free the Roman king Maximilian from his imprisonment at Bruges, and when, in 1489, the King returned to Germany, Albert was left as his representative to prosecute the war against the rebels.

In Germany the small Christadelphian community founded by Albert Maier went underground from 1940 – 1945, and a leading brother, Albert Merz, was imprisoned as a conscientious objector and later executed.

As the Welf duke Henry the Proud, son-in-law and heir of Lothair and the most powerful prince in Germany, who had been passed over in the election, refused to acknowledge the new king, Conrad III deprived him of all his territories, giving the Duchy of Saxony to Albert the Bear and that of Bavaria to Leopold IV, Margrave of Austria.

Other officers promoted to the second highest military rank in Germany were Albert Kesselring, Hugo Sperrle, Erhard Milch, and Wolfram von Richthofen.

The Chronicle of Henry of Livonia from the 1220s gives a firsthand account of the Christianization of Livonia, granted as a fief by the Hohenstaufen Holy Roman Emperor, de facto but not known as the King of Germany, Philip of Swabia, to Bishop Albert of Buxthoeven, nephew of the Hartwig II, Archbishop of Bremen, who sailed with a convoy of ships filled with armed crusaders to carve out a Catholic territory in the east during the Livonian Crusade.

Magdalena's maternal grandparents were Kazimierz IV Jagiellon and his wife queen Elisabeth of Austria, daughter of Albert II of Germany.

This discovery prompted the letter from Albert Einstein to President Franklin D. Roosevelt warning of the possibility that Nazi Germany might be attempting to build an atomic bomb.

* 1933 – Albert Einstein flees Nazi Germany and moves to the United States.

* December – Holy Roman Emperor Rudolph I of Germany invests his sons Albert I of Germany and Rudolph II of Austria as co-rulers of the duchies of Austria and Styria, thus founding the Habsburg dynasty in those territories.

* October 17 – Albert Einstein arrives in the United States as a refugee from Nazi Germany ; he accepts a position at Princeton University.

* June 11 – Albert I of Brandenburg, also called, The Bear ( Ger: Albrecht der Bär ), becomes the founder of the Margraviate of Brandenburg, Germany and the first Margrave.

* 1255 – July – Albert I of Germany, Holy Roman Emperor ( d. 1308 )