William I's second son Richard was killed in a hunting accident in 1081, so William bequeathed his dominions to his three surviving sons in the following manner:

William also visited Wales during 1081, although the English and the Welsh sources differ on the exact purpose of the visit.

By the end of 1081, William was back on the continent, dealing with disturbances in Maine.

On the other hand, he was successful on the whole in pursuing the policy of Geoffrey Martel in Maine: after destroying La Flèche, by the peace of Blanchelande ( 1081 ), he received the homage of Robert Curthose (" Courteheuse "), son of William the Conqueror, for Maine.

William the Conqueror nominated him to the see of Durham on 9 November 1080, and he was duly consecrated on either 27 December 1080 or 3 January 1081.

In 1073 Wulfstan helped Thomas of Bayeux consecrate Radulf as Bishop of Orkney, and in 1081 helped consecrate William de St-Calais as Bishop of Durham.

This was similar to the way the eldest son of William I, Richard, had died in 1081.

Two of William's sons died in the Forest: Prince Richard in 1081 and King William II ( William Rufus ) in 1100.

The building of Sandal Castle was begun early in the 12th century by William de Warenne, 2nd Earl of Surrey ( 1081 – 1138 ) who was granted the Sandal estates in 1107 and it became the stronghold of the manor.

William de Warenne, 2nd Earl of Surrey ( 1081 – 1138 ) was granted the Sandal estates in 1107.

However he took a leading role in reconciling the Conqueror with his eldest son Robert Curthose in 1081 and he stood high in the Conqueror's favour.

He built Lewes Castle on the Saxon site ; and he and his wife, Gundred also founded the Priory of St Pancras, a Cluniac priory, in about 1081.

Hints about the derivation of the name Radyr can be found in Lifris's writings " Life of St Cadog " written between 1081 and 1104 but relating to the earlier period around 530 AD, which mentions a croft or " tref " on the site called Aradur Hen.

* Suger of St Denis ( c. 1081 – 1151 )

In 1081 Caradog ap Gruffydd invaded Deheubarth and drove Rhys to seek sanctuary in the St David's Cathedral.

He died in June 1081 in the Imperial Free City of Novara and was interred in the monastery of St. Lawrence.

The Battle of Dyrrhachium ( near present-day Durrës in Albania ) took place on October 18, 1081 between the Byzantine Empire, led by the Emperor Alexius I Comnenus ( r. 1081 – 1118 ), and the Normans of southern Italy under Robert Guiscard, Duke of Apulia and Calabria.

The Battle of Mynydd Carn took place in 1081, as part of a dynastic struggle for control of the Welsh kingdoms of Gwynedd and Deheubarth.

Alexios I Komnenos, Latinized as Alexius I Comnenus (, 1056 – 15 August 1118 — note that some sources list his date of birth as 1048 ), was Byzantine emperor from 1081 to 1118, and although he was not the founder of the Komnenian dynasty, it was during his reign that the Komnenos family came to full power.

Alexios ' father declined the throne on the abdication of Isaac, who was accordingly succeeded by four emperors of other families between 1059 and 1081.

Under Michael VII Doukas Parapinakes ( 1071 – 1078 ) and Nikephoros III Botaneiates ( 1078 – 1081 ), he was also employed, along with his elder brother Isaac, against rebels in Asia Minor, Thrace, and in Epirus.

The mother of Alexios, Anna Dalassena, was to play a prominent role in this coup d ' état of 1081, along with the current empress, Maria of Alania.

As stated in the Alexiad, Isaac and Alexios left Constantinople in mid-February 1081 to raise an army against Botaneiates.

After bribing the Western troops who had guarded the city, Isaac and Alexios Komnenos entered the capital victoriously on April 1, 1081.

* Constantine Humbertopoulos, who had assisted Alexios in gaining the throne in 1081 conspired against him in 1091 with an Armenian called Ariebes.

* 1081 – Alexios I Komnenos is crowned Byzantine emperor at Constantinople, bringing the Komnenian dynasty to full power.

With the end of western Roman power, the islands, to the extent that they were governed at all, were part of territories of Goths, Vandals, Saracens, before the Normans fortified Favignana in 1081.

Abbot Suger ( c 1081 – 1135 ) in a medieval stained glass window.

Under the Comnenian dynasty ( 1081 – 1185 ), Byzantium staged a remarkable recovery.

* 1081 – Louis VI of France ( d. 1137 )

In 1081, El Cid, went on to offer his services to the Moorish king of the northeast Al-Andalus city of Zaragoza, Yusuf al-Mu ' taman ibn Hud, and served both him and his successor, Al-Mustain II.

That kingdom was divided between al-Mutamin ( 1081 – 1085 ) who ruled Zaragoza proper, and his brother al-Mundhir, who ruled Lérida and Tortosa.

Eusebius ( Bruno ) of Angers ( died September 1, 1081 ) was bishop of Angers, France.

It was only in the Comnenian period ( 1081 – 1185 ) that the cult of the icon became widespread in the Byzantine world, partly on account of the dearth of richer materials ( such as mosaics, ivory, and enamels ), but also because an iconostasis a special screen for icons was introduced then in ecclesiastical practice.

Average annual rainfall is 1081 mm, varying from 318 to 1698 mm year to year.

In 1081, Matilda suffered some further losses, and Henry formally deposed her in July.

* 1081 – The Normans defeat the Byzantine Empire in the Battle of Dyrrhachium.

* 1972 – Philippine President Ferdinand Marcos signs Proclamation № 1081, placing the entire country under martial law.

The king was at Gloucester for Christmas 1080 and at Winchester for Whitsun in 1081, ceremonially wearing his crown on both occasions.

* 1080 – 1081: The Chinese statesman and scientist Shen Kuo is put in command of the campaign against the Western Xia, and although he successfully halts their invasion route to Yanzhou ( modern Yan ' an ), another officer disobeys imperial orders and the campaign is ultimately a failure because of it.

* May 23 – Henry V, Holy Roman Emperor ( b. 1081 )