[Commonplace book. Manuscript. ]
"A cattalogue of my bookes 1682": p.108
"First baronet, traveler, and author. He studied at Oxford and Trinity College, Cambridge. He travelled to Persia and in Europe; and was a comissioner with Fairfax's army. He attended Charles I from 1647-49 as one of the grooms of his bedchamber in which capacity he served him until his execution, being during the last few months of his life his sole attendant. In 1660, Herbert was rewarded by a baronetcy for his faithful services to Charles I"
(Dictionary of National Biography. Oxford).