Siward was the Earl of Northumbria. His reign lasted from 1041 to 1055. He was born in Scandinavia and is buried at St. Olave's Church in York, England.

Morcar the Earl of Northumbria and Edwin the Earl of Mercia.

The boy murdered by Macbeth's assassins was Young Siward, the son of Siward, Earl of Northumberland. He was killed during the battle between Macbeth's forces and Siward's army.

enlist the help of the Earl of Northumberland and Siward

young siward was slain in the attempt to murder macbeth.