1. Egerton Ch 7916 Reference (shelfmark): Egerton Ch 7916 Title: Scope & Content: Henry O'Brien, Baron O'Brien of Ibrackan; son of Henry, 7th Earl of Thomond: Signet Warrant for appointment as Lord Lieut. of Essex: 1722. Army; England: Appointments of Lord Lieuts. and Deputy-Lieuts.: 1662-1763. Collection Area: Western Manuscripts Languages: English Date Range: 1722 Extent: 1 item