From The Colonial Records of North Carolina, Volume 5:
"...unto Henry McCullough Esqr Secretary of this province...4 July 1755."
Another, more expansive, reference to (and by) Henry McCullough, that also mentions his son, Henry Eustace McCullough, can be seen here.
My In Deeds blog has this post: A Map In The Henry E. McCulloh Survey Book.
Also found during my Clendenin research and posted in In Deeds:
Deed from JOSEPH CLENDENEN to JONATHAN LINDLEY
Indenture made this 20th day of February 1804, between Joseph Clendenen and Jonathan Lindley, both of Orange county...for a tract of land being part of a tract granted to Henry McCulloch on the 3rd day of March 1745, beginning on Varnel's Creek, and containing two hundred acres.
Test: Thomas Cartor and Thomas Jones