Isaac and Rebecca are buried in the old DeHaven Cemetery east of Covington, Fountain County, Indiana. Isaac can be found on 1830 census (Troy Township, Fountain County, Indiana. Isaac was in Scott County, Kentucky in 1810 and from other material he was still in Scott county.

Isaac was an Ensign in the Virginia Dragoons (calvary) - was at Valley Forge

Isaac DeHaven enlisted in Leesburg, in June, 1776 in Captain Henry Lee's company of Virginia Cavalry. He served as corporal in Captains Rudolph's and Henry Peyton's companies in Colonels Henry Lee's and Bland's Corps of Cavalary. He was in the battle of Germantown, a battle near Red Bank, several skirmishes near Philadelphia, and in an engagement with the Hessians near Peekshill, and was discharged in December of 1778.
The Battle of Red Bank (October 22, 1777) was a battle of the American Revolutionary War in which a Hessian force sent to take Fort Mercer on the left bank of the Delaware River just south of Philadelphia were decisively defeated by a far inferior force of Colonial defenders. The victory supplied a sorely-needed morale boost to the American cause.
Virginia Pension Roll of 1835 Report from the Secretary of War In relation to the Pension Establishment Of the United States 1835 Copied and indexed by William R. Navey P. O. Box 251 Hollyridge, NC 28445-0251