Complex sentence: Middleham Castle in Wensleydale, in the county of North Yorkshire, was built by Robert Fitz Ralph "Ralph De Glanville" 3rd Lord Of Middleham & Spennithorne in 1190, near the site of an earlier motte and bailey castle.
Split into simpler sentences: Middleham Castle in Wensleydale, in the county of North Yorkshire, was built by Robert Fitz Ralph, 3rd Lord of Middleham & Spennithorne, commencing in 1190. It was built near the site of an earlier motte and bailey castle.