March 26, 1031- birth of Malcolm III of Scotland.
Malcolm was the son of Duncan I of Scotland. His father did not assume the throne thought until Malcolm was two years old. Duncan inherited the throne from his maternal grandfather Malcolm II. Malcolm had no living sons so his throne passed to the sons of his daughter Bethoc. His father was Crinan, a lay monk. Duncan was the Duncan of Macbeth fame. Nothing is known of Malcom's mother other then her Gaelic name was Suthen. There is suggestion she may have been a relative of Siward, earl of Northumbria. Some historians thought daughter or niece, but time line wise it more likely (if the stories of her heritage are true which not much proof), she was Siward's sister. He was said to have a sister Sibylle which would translate to Suthen in Gaelic.
Duncan was killed in 1040, when Malcolm was only 9 years old, by Macbeth. Donaldbane was 8. It is unclear where Malcolm and his brother were during the 17 year reign of Macbeth. Some believe that Malcolm was sent to the court of Edward the Confessor, while Donaldbane accompanied his mother to the Isles. Others say that both Malcolm and Donaldbane went with their mother to the court of Thorfinn Sigurdsson, Earl of Orkney. The earl was a long time enemy of Macbeth, and family. Thorfinn was Duncan's first cousin, both grandsons of Malcolm II. While Duncan was a son of Bethoc, his eldest daughter, Thorfin was the son of her younger sister Olith. Thorfinn had his own claim to the throne after the young princes.
In 1057 Malcolm defeated Macbeth in battle. Macbeth was succeeded by his stepson Lulach but Lulach was killed by Malcolm in April 1058. Malcom was crowned king some time around April 25, 1058.
His first marriage was to Ingibiorg Finnsdottir. She was the widow of Thorffin who had died in 1065. She was mother to one, probably two, of his sons. Duncan II of Scotland, and likely a son named Domnall who is reported to have died in 1085. She likely died in 1069. Their marriage secured peace for Malcolm both in the North and West.
His second marriage was to St. Margaret of Scotland. Margaret was the daughter of Edward the exile, son of King Edmund the Ironside. Margaret had come to Scotland with her brother Edgar when they sough asylum. They gave their sons names common in her family. William the Conqueror was not steady on the throne during the birth of their earlier sons, and naming her sons for her relatives who had been on the throne, was a clear sign. The later sons names shifted away from that, likely as William was now secure.
During the reign of William's son Duncan marched south. He ravished Northumbria along the way. When he was returning back to Scotland, he was ambushed by Alnwick by the Earl of Northumberland. He was killed by the steward of Bamburgh castle. His son Edward unfortunately was mortally wounded, and Queen Margaret died soon after from the loss.
He was originally buried at Tynemouth abbey, but during the reign of his son Alexander he was moved to Dunfermline Abbey. Margaret was eventually buried near him after she was canonized.
https://en.wikipedia.org/wiki/Dunfermline_Abbey
His children with Ingiborg:
-Duncan: succeeded his father as Duncan II. He married Ethelreda, daughter of Gospatrick of Nortumbria. Though he had a son William, he was succeeded by his Uncle Donaldbane (Donald III). Donaldbane had taken the throne when his brother died, but Duncan had invaded with armies including those of his father in law and had taken power. But he was killed in 1094 and Donaldbane reclaimed the throne.
and possibly though not much record on either
-Domnall/Malcolm who died in 1085
-Donald died in 1094
Children by Margaret
-Edward: died with his father in 1093. (named for grandfather Edward the exile)
-Edmund
named for his great-grandfather Edmund Ironside) He had gone with Duncan to the court of William Rufus when their father died. He helped him claim the throne from Donaldbane, but he later turned around and backed his Uncle. In 1097 his Uncle Edgar (Margaret's brother) invaded Scotland over throwing Donaldbane once again and installing his nephew and namesake Edgar on the throne. Edmund was mutilated and imprisoned, dying in 1099.
-Ethelred (named for his great-great grandfather Ethelred the unready) was a lay abbot. He was with his mother when she died. When his Uncle usurped the throne, Ethelred stole his mother's body and using the cover of fog, managed to take it away to the abbey for burial. He died soon after and was buried at St Andrews.
-Edgar (last son named for their mother's English kingly family, he was named for his maternal uncle). With the help of his namesake, he claimed the throne and became King Edgar in 1097, reigning for ten years. He had not married. His successor was named at the time of his coronation as his younger brother Alexander.
-Alexander: unlike his older brothers he was not named for his English relatives, but for Pope Alexander II. He became King Alexander I in 1107 after Edgar died. He was married to Sibylla of Normandy who he was devoted to but unfortunately they had no children.
-Edith: also known as Mathilda. Robert Curthose (son of William the conqueror) and his mother Matilda served as her godparents. Matilda married Henry I who was son/brother of her godparents. Having spent much of her life in a convent there was some concern she was a nun. She had two children, her daughter becoming Empress Matilda.
-Mary like her sister there was concern she had been a nun as well. Henry arranged a marriage for her to Eustace III, Count of Boulogne. They had a daughter Matilda. Matilda would succeed her father was Countess. She later married Stephen of Blois, who was Henry's successor. It brought Matilda's husband into conflict with her cousin Empress Matilda. While Stephen remained king, it was Empress Matilda's son who succeeded him, not Mary's grandchildren. Matilda of Boulogne was succeeded by two sons, and eventually her daughter and mother's name sake Mary.
-David: succeeded his brother Alexander in 1124 as David I. He was married to Maud, Countess of Huntingdon. She had 3 children from a prior marriage including Saint Waltheof. Maud bore David four children. His only son to reach adulthood died a year before him, Henry. David was succeeded by his grandson Malcolm IV, a son of Henry and his wife Ada de Warrenne. They were also the parents of William the Lion.
Mary was actually the last of her names. Born during the reign of her great-grandmother she was not surprisingly actually Victoria. 
