Landrum Marriage

I am interested in finding a marriage between any Landrums and Burke's.I have a deed which reflects John Landrum (I believe Jr) who moved from Virginia to Orange County, North Carolina and in this deed it states he gave land to his grandsons, Milner (various spellings), Nimrod and Edward.Does anyone know of a marriage that would have been in the early 1700's and before 1745 that took place in most likely Virginia between a Landrum and a Burke.I am open to any information that might lead me to who the parents are of these burkes...thank you