Thomas Willcox - sons John Willcox, James Willcox, and Mark Willcox.
John Willcox, "son of Thomas" (1728-1793). He moved to NC, and the Willcoxes in NC and GA are descended from him. Married to Rebecca Butler. Anything about the American Revolution, "Regulators", or NC iron works refers to this John.
3rd generation: (grandsons of Thomas Willcox)
John Willcox II, son of John Willcox and Rebecca Butler (1777-1852) - I don't really know anything about him yet.
John Wilcox (1755-1818), hatter, son of James Willcox and Prudence Doyle. Married Sarah Walton. Lived in Middletown, Delaware, PA and appears on the tax records consistently there. Grew up in Upper Providence, Delaware, PA (his father James owned a paper mill there). John would have been about 14 when his father died in 1769.
John Willcox, infant son of Mark Willcox. Died in 1784. (1784-1784)
John Willcox, son of Mark Willcox and brother to James M. Willcox. (1789-1826) He married Elizabeth Brackett (1803-1879). I think he fits "paper maker" the most. Any correspondence or documents that have to do with Ivy Mills, Glen Mills or paper making during the early 1800s that mention John Willcox are most likely about him. According to "The Willcox Family from "Old Philadelphia Families" by Frank Willing Leach, 1912," John was "in 1811, admitted as a partner in the Ivy Mills concern." During the war with England he organized in 1814 an independent Company of Cavalry, of which he was chosen Captain. He is buried in the Willcox family cemetery at the old homestead (Ivy Mills - PA) having died an premature death (illness).
Apparently this John had a wax portrait done of him - I would love to find it.*
4th generation: (great grandson of Thomas Willcox)
John Willcox (1827-1846), son of James M. Willcox (mentioned above), and brother to James M. (b. 1824) and Joseph (b. 1829). I don't know anything about him yet. He is buried in the Willcox family cemetery at the old homestead (Ivy Mills - PA).
5th generation: (great-great grandson of Thomas Willcox)
John H. Wilcox, son of John Willcox and Sarah Walton. and younger brother of Prudence Wilcox Kartchner. b. 1792. This John also worked in the paper business and as a merchant in Philadelphia from what I can tell. I don't know much about him yet. I think his wife may have been Sarah Ellis, described at this link (type "John Wilcox" in the search box): http://files.usgwarchives.org/pa/montgomery/church/merion09.txt
* "John Wilcox, 1789-1826. Colored wax, faces right; 2 1/2 inches high; black coat, white vest and neckcloth; brown hair.
Col. Joseph Wilcox, Philadelphia, Pa."