Dear Malcolm, Thanks for your message. My James HUMES supp. mar. Elizabeth HAMILTON, 20 August 1781, Lancaster Co., PA. Her parents were possibly James HAMILTON and Mary (MILLER?).James HAMILTON supp. d. 3 November 1807, Lancaster Co., PA. His children were:William HAMILTON b. ca. 1750; James HAMILTON b. 1752, mar. Mary "Polly" Elliott; Jennet HAMILTON mar. George McILVAINE; Margaret HAMILTON; Mary HAMILTON mar. Samuel HUMES; Elizabeth HAMILTON (my ancestor) b. ca. 1760, mar. James HUMES; and Sarah HAMILTON mar. William Porter.
My Isaac ROBINSON/ROBISON mar. Anna HUMES, dau. of James in Pike Co., OH.Isaac was supp. b. in PA, but I have not found where.There was a ROBISON family in Lancaster Co. PA.that may fit my line, but no proof.
I know what you mean about all the James HAMILTONS in PA. One James HAMILTON was an early Gov. of PA.