Armorial bookstamp of Robert Sidney, 1st Earl of Leicester (d.1626). In 1600 he donated £100 to the Bodleian Library in Oxford, which purchased with it 55 foreign books, all of which were imprinted with Sidney's armorial stamp. The heraldry is as follows: Quarterly of sixteen:

• 1. A pheon (Sydney)
• 2. Barry of ten argent and gules, a lion rampant or ducally crowned per pale of the first and second (Brandon)
• 3. A lion rampant double queued (Dudley)
• 4. Or, two lions passant in pale azure (de Somery, Baron Somery (John de Somery, 1st Baron Somery (1279-1322), of Dudley Castle, Staffordshire/Warwickshire; (Cokayne, G. E. & Geoffrey H. White, eds. (1953). The Complete Peerage, or a history of the House of Lords and all its members from the earliest times, volume XII part 1: Skelmersdale to Towton. Vol 12.1 (2nd ed.). London: The St. Catherine Press, pp.114-115; Arms shown on the Parliamentary Roll (Sire Perceval de Somery of Warwickshire): Azure, two lions passant or. Roger de Somery bore the arms of the Paynel family (early feudal overlord at Little Crawley, Bucks): Or, two lions passant azure (Complete Peerage, Vol 12.1, p.113)) Alternatively: "Somerie, Baron Dudley (extinct 1322)" (Burke's General Armory, 1884, p.948) & "Somery of Warwickshire" Or, two lions passant in pale azure and with tinctures inverted: Azure, two lions passant in pale or (Burke's General Armory, 1884, p.949)
• 5. Barry of six in chief three torteaux roundels a label of three points for difference (Grey, Viscount Lisle)
• 6. Or, a maunch gules (Hastings, Earl of Pembroke)
• 7. A wolf's head erased (Attributed arms of Hugh "Lupus", 1st Earl of Chester)
• 8. Barry of ten as many martlets in orle (de Valence, Earl of Pembroke)
• 9. A lion rampant (Marshall, Earl of Pembroke)
• 10. Seven mascles conjoined three and one (Ferrers of Groby)
• 11. A lion rampant within a bordure engrailed (Talbot)
• 12. A fess between six crosses crosslet (Beauchamp)
• 13. Checquy, a chevron ermine (Newburgh, Earl of Warwick)
• 14. A lion statant guardant crowned (de Lisle of Kingston Lisle)
• 15. A chevron (Tyes)
• 16. A fess dancetty (West);
  
  

Over-all an inescutcheon of pretence: quarterly of 4:

• 1. Argent, five fusils in bend gules on a a chief azure three escallops of the first (Gamage)
• 2. Vair (Martel?)
• 3. Checquy, a fess ermine (Turberville of Coity)
• 4. Three chevrons (Llewellyn)