Anscarids

The Anscarids (Latin: Anscarii) or the House of Ivrea were a medieval Frankish dynasty of Burgundian origin which rose to prominence in Italy in the tenth century, even briefly holding the Italian throne. They also ruled the County of Burgundy in the eleventh and twelfth centuries and it was one of their members who first declared himself a count palatine. A cadet branch ruled the Kingdom of Galicia from 1111 and the Kingdoms of Castile and León from 1126 until 1369.

The founder of the family's fortunes was a petty Burgundian count named Anscar, who, with the support of his powerful brother, the archbishop of Rheims Fulk the Venerable, brought Guy III of Spoleto to Langres to be crowned King of France in 887. Their plot failing, Anscar accompanied Guy back to Italy to seek that vacant throne and, in gratefulness to Anscar, Guy created the March of Ivrea to bestow on his Burgundian faithful. Anscar's descendants held the march until 1030. Perhaps the most illustrious scion of the house was his grandson Berengar, the first of three Anscarids to be crowned king of Italy.

Berengar seized the throne in 950 after the death of Lothair II. He was opposed, immediately, by Lothair's widow Adelaide, whom he imprisoned after his attempt to force her marriage to his son, Adalbert II, failed. Emperor Otto I came down the peninsula and forced him to do homage in 952. For the next eleven years, Berengar and his co-crowned son governed Italy until Otto finally formally deposed them in 963.

...
Wikipedia