The Battle of Tinchebray (or Tinchebrai) was fought September 28, 1106, in the town of Tinchebray (in today's Orne département of France), Normandy, between an invading force led by Henry I of England, and his older brother Robert Curthose, the Duke of Normandy. Henry's knights won a decisive victory, capturing Robert and imprisoning him in England and then Wales until Robert's death in Cardiff Castle. England and Normandy remained under a single ruler until 1204. King Henry I of England (c. ... September 28 is the 271st day of the year (272nd in leap years) in the Gregorian calendar. ... Events September 28 - Henry I of England defeats his older brother Robert Curthose, duke of Normandy, at the Battle of Tinchebrai, and imprisons him in Cardiff Castle; Edgar Atheling and William Clito are also taken prisoner. ... King Henry I of England (c. ... Robert II (called Curthose for his short squat appearance) (c. ... The Duke of Normandy is a title held (or claimed) by various Norman, English, French and British rulers from the 10th century. ... King Henry I of England (c. ... This article or section does not cite its references or sources. ... Robert of Bellême, 3rd Earl of Shrewsbury (1052- after 1130) was an Anglo-Norman nobleman, and one of the most promiment figures in the competition for the succession to England and Normandy between the sons of William the Conqueror. ... Robert de Beaumont, Count of Meulan (c. ... William de Warenne was the name of four English noblemen, all related, and all also Earl of Surrey. ... Alan IV of Cornwall (died 1119) was duke of Brittany, from 1084 to 1112. ... September 28 is the 271st day of the year (272nd in leap years) in the Gregorian calendar. ... Events September 28 - Henry I of England defeats his older brother Robert Curthose, duke of Normandy, at the Battle of Tinchebrai, and imprisons him in Cardiff Castle; Edgar Atheling and William Clito are also taken prisoner. ... Orne is a département in the northwest of France named after the Orne River. ... The départements (or departments) are administrative units of France and many former French colonies, roughly analogous to English counties. ... Mont Saint-Michel, one of the famous symbols of Normandy. ... King Henry I of England (c. ... Robert II (called Curthose for his short squat appearance) (c. ... The Duke of Normandy is a title held (or claimed) by various Norman, English, French and British rulers from the 10th century. ... Motto: (French for God and my right) Anthem: God Save the King/Queen Capital London Largest city London Official language(s) English (de facto) Unification    - by Athelstan AD 927  Area    - Total 130,395 km² (1st in UK)   50,346 sq mi  Population    - 2005 est. ... Motto: (Welsh for Wales forever) Anthem: Hen Wlad Fy Nhadau Capital Cardiff Largest city Cardiff Official language(s) Welsh, English Government Constitutional monarchy  - Queen Queen Elizabeth II  - Prime Minister of the UK Tony Blair MP  - First Minister Rhodri Morgan AM Unification    - by Gruffudd ap Llywelyn 1056  Area    - Total 20,779... The Norman keep Burgess summer smoking room Cardiff Castle in Wales was founded by the Normans in 1091, on the site of a Roman fort whose remains can still be seen. ... // Events February - Byzantine emperor Alexius IV is overthrown in a revolution, and Alexius V is proclaimed emperor. ...

The previous year Henry had invaded Normandy, taking Bayeux and Caen. He was forced to break off his campaign due to political problems arising from the Investiture Controversy. With these settled, he returned to Normandy in the summer of 1106. After quickly taking the fortified abbey of Saint-Pierre sur Dives (near Falaise), Henry turned south and besieged the castle of Tinchebray, on a hill above the town. Tinchebray is on the border of the county of Mortain, in the southwest of Normandy, and was held by the count, who was one of the few important Norman barons still loyal to Robert. Bayeux (pronounced ) is a small town and commune in the Calvados département, in Normandy, northwestern France. ... Caen is a commune of northwestern France. ... The Investiture Controversy was the most significant conflict between secular and religious powers in medieval Europe. ... Falaise is a commune in the Calvados département, in the Basse-Normandie administrative région, in Normandy, north-western France. ...

Robert brought up his forces to break the siege, and, after some unsuccessful negotiations, battle was inevitable.

Henry's army was organized into three groups (as is usual for the period). These were commanded by Ranulf of Bayeux, Robert de Beaumont, 1st Earl of Leicester, and William de Warenne, 2nd Earl of Surrey. In addition he had a reserve, commanded by Helias, Count of Maine, hidden out of sight. Also on Henry's side were Alan IV, Duke of Brittany, William, Count of Evreux, Ralph of Tosny, Robert of Montfort, and Robert of Grandmesil. Robert de Beaumont, 1st Earl of Leicester and Count of Meulan (died June 5, 1118) was a powerful English and French nobleman, revered as one of the wisest men of his age. ... William de Warenne, 2nd Earl of Surrey (d. ... Alan IV of Cornwall (died 1119) was duke of Brittany, from 1084 to 1112. ...

On Robert Curthose's side were William, Count of Mortain, and Robert of Bellême, 3rd Earl of Shrewsbury. This article or section does not cite its references or sources. ... Robert of Bellême, 3rd Earl of Shrewsbury (1052- after 1130) was an Anglo-Norman nobleman, and one of the most promiment figures in the competition for the succession to England and Normandy between the sons of William the Conqueror. ...

The battle itself only lasted an hour. The intervention of Henry's reserve proved decisive. Most of Robert's army was captured or killed. Besides Robert himself, those captured include Edgar Atheling (uncle of Henry's wife), and William, count of Mortain. The title given to this article is incorrect due to technical limitations. ...

Most of the prisoners were released, but Robert Curthose and William of Mortain were to spend the rest of their lives in captivity.