My Family Tree

The family lore for Matthew Deavenport by the way (we think he was brother of Daniel) states their father died young and their mother remarried. This is probably why we are missing records on their parents. We know a James and Edward in that generation, but James was still alive in 1788 when Daniel and Matthew were grown, so we guess their father was instead Edward. I will guess that died young means Edward died between 1773 and 1777, or long enough for Edward, Jr to be born. Also, it's generally the rule that someone is named Jr in the records only if their father is still alive.

John Scott Davenport thinks so too, based on inherited land, "James River Davenport Search":
"10Oct1791 ­ DEED: Daniel Davenport, wife Betsy, of Prince George County, and Matthew Davenport, of Charlotte County, to James Sturdivant, of Prince George County, for £50, 100 acres in Prince George County on the south side of Second Swamp, adjoining said Swamp... /s/ Daniel Davenport, Betsy Davenport, Matthew Davenport. Wit: James Sturdivant, Daniel Sturdivant. (Prince George County, VA, Deeds, ?:618)
---> The land being conveyed here appears to be the tract that Rubin Rives conveyed to Edward Davenport in 1760 (see above), which would suggest that Daniel and Matthew were sons of Edward. Both Matthew and Daniel subsequently appeared in Charlotte County records."

Final clue - Matthew Deavenport named a son "Thomas Daniel Deavenport"