Don't have a Cunlifee manifest, and doubt if such would still exist from 1752.But of course, I know the land grant record you're referring to.
I'm a descendant of Bernard through George, George Jr. to Mississippi, etc.
More importantly, I've found Bernard and all of his children's baptisms in Sandhausen, Germany, Reformed Church records.The girls mentioned as being the same age in the land grant were twins....and several generations before.
Let me hear from you! Scott Wilds email@example.com