1.  Stephen E. Bradley, Jr.  c1990.  The Wills of Tyrrell County, North Carolina. Self-published, Keysville, VA (courtesy of Bill Gray):

# 43  January 11, 1764.  Probate Mar. Term 1766 John Blount To my sons Thomas, John, Greshom Blount 1 shilling sterling each. To my Daughters Margaret Steely, Elizabeth Swain 1 shilling each. To my 2 youngest daughters Deborah Gray and Refina Blount all my household goods, livestock. Ex: My friend Henry Gray, Refina Blount. Wit: Frans. Egleton, Jeroboam Thomas, Godfrey Gray

The "f" in "Refina" would appear to be a misreading of "long-s."

2.  1755 Tax List, Tyrrell County, North Carolina (online at the Tyrrell County NCGenWeb site).

TAXABLE PERSONS	WHITE	BLACK
Blount, Benjamin	1	3
Blount, Gersham	1
Blount, Jacob	1
Blount, Jacob	2
Blount, James, Esq.	2	13
Blount, John Junr.	1
Blount, John Senr.	2
Blount, Reading	1

To be tithable, a male had to be 16 or over; to be taxable, I believe a male had to be 21 or over.  Presumably, the male with John Sr. is his son, Thomas.

3.  James Robert Bent Hathaway, ed.  1900-1903.  The North Carolina Historical and Genealogical Register.  v. 1, no. 1 (Jan 1900) thru v. 3, no. 3 (Jul 1903) reprinted 1970/71 by Genealogical Publ. Co., Baltimore, MD (courtesy of Bill Gray):

v. 1, p. 148	Sept. 18, 1715. Petition of Jacob Blount, guardian to John Blount praying that his land be laid out according to the will of his father Thomas Blount dec'd.
v. 2, p. 446	March 1, 1720. John Blount of New England to William Downing, 640 acres known as Cabbin Neck bequeathed to me by will of my late father, Thomas Blount.

4.  Betty Fagan Burr.  c1981/3.  Tyrell County, North Carolina, Minutes, Court of Pleas and Quarter Sessions.  Self-published, Nacogdoches, TX (courtesy of Bill Gray):

Sept. 1751.	An account of sales of part of estate of James Smith dec'd. was proven by John Blount.
Dec. 1751.	A Deed of Sale of land from John Blount to William Stealey was acknowledged.
Dec. 1751.	John Blount Sr., planter, to his son Thomas Blount, 100 acres Albemarle Sound joining William Stealey, Mr. Pollock and Jno. Blount.
Mar. 4, 1754.	Girshim Blount records his mark.
June 1756.	Joshua Swain appointed overseer in room and District of John Blount Jr.
Dec. 1761.	A Deed of sale of Land from John Blount Sr. to his son John Blount Jr. was acknowledged.

William STEALEY may possibly be John's son-in-law. 

5.  Helen M. Blount Prescott.  1902.  Blount and Blunt.  Press of W.F. Roberts, Washington, DC.  [This is not a book, but a one-page pedigree chart.] 

6.  Emails from Bill Gray.