Sources: -

Prince George’s Land Records, Liber T, f.443; Y, f. 456

Bowie, pp. 561, 600

Brown, v. 1, p. 330

Rice, pp. 1, 31, 42, 53, 69

Fred. Co. Land Patents, BY & GS#5, f. 583

Fred. Co. Land Records, Liber M, f. 581-2; ; Liber W, f. 290; Liber BD, f. 365

Fred. Co. Inventory Accounts, Liber WD, no. 15, f. 744

Maryland Calender of State Papers, Black Books, items 273, 454, 703, 942,1033.

Mackenzie, Colonial Families, v. 4, pp. 406-410.

Montg. Co. Land Records, Liber A, f. 207; Liber B, f. 280.

Prince George's Land Records, Liber C, f. 122c; Liber T, f. 443; Liber Y, f. 456.

Rice, pp. 1, 31, 42, 53, 69, 76, 78, 102, 121, 131, 138, x, 279-280.

1773 Account of Taxables of Potomack Hundred by Samuel Magruder

Frederick County Wills, Book A1

Biographies: OWI

I think that there is confusion between Robert, son of Laurence (1), and Robert, son of Edward, If Robert, son of Edward married Mary Beall in 1766, he would have been 37 years old.

“Friends Advice” lay on a branch of Little Seneca Creek, putting it northeast of present-day Poolesville, probably in Sugarloaf or Sugarland Hundred.

Son of Edward who died intestate in 1771.