p 295.
** Heylin p 109.
But all these schemes for promoting industry were likely to prove abortive by the fear of domestic convulsions, arising from the ambition of Warwick.

That nobleman, not contented with the station which he had attained, carried further his pretensions, and had gained partisans who were disposed to second him in every enterprise.

The last earl of Northumberland died without issue; and as Sir Thomas Piercy, his brother, had been attainted on account of the share which he had in the Yorkshire insurrection during the late reign, the title was at present extinct, and the estate was vested in the crown.

Warwick now procured to himself a grant of those ample possessions, which lay chiefly in the north, the most warlike part of the kingdom; and was dignified with the title of duke of Northumberland.

His friend Paulet, Lord St.John, the treasurer, was created, first, earl of Wiltshire, then marquis of Winchester: Sir William Herbert obtained the title of earl of Pembroke.
But the ambition of Northumberland made him regard all increase of possessions and titles, either to himself or his artisans, as steps only to further acquisitions.