Isham Randolph of Dungeness

Isham Randolph (December 1684 – November 1742), sometimes referred to as Isham Randolph of Dungeness, was the maternal grandfather of United States President Thomas Jefferson. Randolph was a planter, a merchant, a public official, and a shipmaster.

The third son of William Randolph and Mary Isham, he was born on the Turkey Island plantation in Henrico County, Virginia. In 1717, Randolph married Jane Lilburne Susan Rogers in London at St. Paul's Church in the Shadwell parish (today east London). Isham and Jane Randolph moved to Virginia.

Isham Randolph had nine children and was familially connected to many other prominent individuals:

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