> the TH in thumber leads to asking if its a T and Humber and it does refer to the river Humber, its the land north of the humber. It makes you think how Yorks

> the TH in thumber leads to asking if its a T and Humber and it does refer to the river Humber, its the land north of the humber. It makes you think how Yorkshire leads there. IIRC, Northumberland was the only part of Northumbria that didn't get absorbed into the Danelaw (the swathe of north and central England conquered and settled by Vikings from the late 800s), which is why it retains the name of the former, much larger region.