Absolom and Agnes are my GGGG grandparents, and I understand your search! There's a lot of confusion and misinformation out there about this. I have seen Peter and Lydia as his parents, though this seems to show up in family trees online with no supporting evidence. I have seen a posting of a DNA study, suggesting Morgan Bryant is Absolom's father, instead of his brother. A death record would be ideal, but as he died during the war, this might be hard to find. I'll check back if I find anything.