History of Siward, earl of Northumbria

The larger than life figure of Siward, earl of Northumbria first appears on the pages of history in the year 1033

A Clerk of Oxford: Wyrms and Werebears: Tale-Telling in the Eleventh Century and Today

Gospatric - Earl of Northumbria

The Real Macbeth: King of Scots, 1040-1054

Northumbrian Period 3 – Osberht to Uhtred - ANECDOTES Osberht, Uhtred

The Real Macbeth, King of Scots The history behind the play and an analysis of the changes Shakespeare made to the history. - ppt download

The Real Macbeth: Mad King or a Clever Eye to Solid Power? – Brewminate: A Bold Blend of News and Ideas

Under Scottish control - England's North East

Siward, Earl of Northumbria - Wikipedia

Here's what stopped William Conquering Cumbria (apart from a little bit of it)

The Death of Earl Siward', James Smetham, 1861

Pedigree: Marriages and issue of Uhtred Royal family trees, Genealogy book, Family history