jacobean, a. [From L. Jacobus James. See 2d Jack.].
Of or pertaining to James the First, of England, or of his reign or times; especially, pertaining to a style of architecture and decoration popular in the time of James I.; as, Jacobean writers.C. L. Eastlake. [1913 Webster]
jacobean, n.
any distinguished personage during the reign of James I of England. [WordNet 1.5]