Search billions of records on

Hey Buddy, can you spare a dime?

 If you found our site useful, Please consider making a donation to help keep this site and its contents free to the public

1st Lord Of Rosslyn William SINCLAIR
(Abt 1028-1070)


Family Links

Dorothy Agnes DUNBAR

1st Lord Of Rosslyn William SINCLAIR

  • Born: Abt 1028, St. Lo, Normandy, France
  • Marriage: Dorothy Agnes DUNBAR
  • Died: 1070, Scotland Border War about age 42

bullet   Another name for William was The SEEMLY.


bullet  General Notes:

1060--Lord of Rosslyn Castle, Roslin, Midlothian, Scotland
William the Seemly, 1st Baron of Rosslyn, accompanied the family of Edward Atheling from Hungary to England 1057. Fought then for Malcolm II with the English rebels who supported Atheling for King of England. He was later killed by troops of his cousin William the Conqueror on the Scottish borders in Northumberland. Given Rosslyn by Malcolm for life rent.

The childless King Edward (the Confessor) of England needed an heir. William, Duke of Normandy, thought since he was the grand nephew of Edward's mother, Queen Emma of England, he had a claim on the throne. But as Edward died on January 5, 1066, he named Harold, his brother-in-law (the most powerful English Earl) not William, to be the next king. Duke William's principal Norman nobles gave their support for his intention to challenge Harold. He then obtained Pope Alexander's blessing and gathered a huge army. They crossed the Channel, landing at Pevensey, Eng., without any resistance, because King Harold's army was waging a battle far to the north against his invading brother, Tosti, and ally King Harold of Norway-Battle of Stamford Bridge- Sept. 25, 1066. William's army marched eastward to Hastings. King Harold moved his heroic army southward as quickly as possible, and took a position on the hill of Senlac, near Hastings. After a long and hard engagement, King Harold and his brother were slain and William the Conqueror was the victor in the southern part of England. Skillfully he sent his troops throughout the northern portions and eventually succeeded in his conquest.

It is very unlikely that William St. Clair/Sinclair (the Seemly, le blond, de Santo Claro- Latin) 1028-1070, a son of Walderne, Lord of St. Clair and St. Lo, and full cousin to William the Conqueror, fought at Hastings. He might have arrived in England after his father, Walderne and uncle Hamo's deaths in 1047(Battle of Val-es -dunes, Normandy). The St. Clairs of Elle and other magnates, who were in open rebellion, met defeat when King Henri I of France came to the aid of the young Duke William of Normandy (the Conqueror). Or William St. Clair might have come after the confiscation of the family title and lands from his younger uncle William Warlenc, Ct. of Mortain, in 1055. With this and the death of Walderne it is likely that it was wise to leave Normandy. Since Edward was William's father's cousin, William the Seemly would have been welcomed as an exile and relative at the court of King Edward the Confessor of England just as Malcolm Canmore had been.

William St. Clair/Sinclair, who as possibly the King's representative, went to Hungary to bring back the true heir, Edward the Exile, (died upon reaching England leaving a son, Edgar.) to replace Edward when he died. Soon after this, William joined Malcolm Canmore in Scotland and received lands in about 1057 at Rosslyn. He fought as Lord of the Marches for Malcolm and upon Malcolm's marriage in 1068 to Margaret, d/o Edward the Exile, became her steward until his death in 1070. A Sinclair legend says that there were 9 St. Clair Knights at Hastings. But the Roll of Battle Abbey only contains the name of one of the Conqueror's relatives. Only Richard de Saint Clair s/o Walderne is clearly one of the St. Clair family. So it is not possible at this time to verify this legend from the lists available.

Could it be that people writing a century or more after Hastings and knowing that there were 9 St. Clairs of fighting age in 1066 assumed that they would have been with the Conqueror. Some have even stated that Walderne and brother Hamo were at Hastings when records show they died in battle in 1047 trying to overthrow young Duke William.

{Consensus of opinion is that William the Seemly (a full cousin) did not fight at Hastings} The absence of the names of William the Conqueror's cousins, Britel and William the Seemly and the Duke's many second cousins listed below paint a picture of little family support at Hastings from the majority of his extended family. We know that his two rebellious 1/2 uncles Archbp. Mauger the Younger & William of Arques and their sons did not support him.

Other 2nd cousins missing from the list are Hamo (s/o Hamo Ct. of Mortain & Corbueil & Walderne's brother) who became King William's Dapifer.

Radulph, Hubert, Adam (worked on the Doomsday Book), Eudo were sons of Hubert of Rye (Walderne's 1/2 brother probably)
Wm. C. of Evreaux -g.son of Archbp. Robert.
Richard "fitz-Gilbert of Tonbridge and Clare
William fitz Osbern (Steward to WC) s/o Emma, the daughter of Duke Richard I's illegitimate son, Rodulf.
Counts Brian & Alan the Red (s/o Ct. Eudo s/o Hadvise d/o Duke Richard I of Normandy. Hadvise was Walderne's aunt)
William Ct. of Eu (s/o WC's father's cousin, William of Eu s/o Duke Richard I)
Rollo (Robert), and his cousins, descendants of Rollo the Viking's 2nd son, Rollo, were also at Hastings. But would have been very distantly related to WC.

From William the Conqueror by David C. Douglas and Sinclair Family in Europe & NA by Leonard Morrison


William married Dorothy Agnes DUNBAR, daughter of 1st Earl Of Dunbar Gospatric I DUNBAR and Aethelreda ENGLAND. (Dorothy Agnes DUNBAR was born about 1055 in Dunbar Castle, East Lothian, Scotland.)


I've tried most of the Genealogy software out there and this is by far the best.

Manages your Family Tree AND converts it to HTML Web Pages for publishing to the web

Legacy Family Tree 5.0 is a full-featured professional genealogy program.
FREE & Deluxe Versions


The Best book store for all your genealogical needs

FastCounter by bCentral




About us | Contact us | Downloads | Surnames | Family Tree | More | Credits | Guestbook | Make a correction | Request a deletion | Submit information | Awards | Genealogy Links | Other Links | Resources | Add your link



Home | Table of Contents | Surnames | Name List

This Web Site was Created 21 Jan 2006 with Legacy 5.0 from Millennia