Robert R. Frazier - Missing a generation?

Geni currently shows this line of descent:

Robert R. Frazier 1713-1811 married Clara Frances Graham 1720-1771
Their son William Buck Frazier Sr born 1776, plus 10 other children. Eight of the children were born after Clara’s death.

Family Search shows a more plausible line of descent at https://www.familysearch.org/tree/person/details/LR97-8JC

Robert R. Frazier 1713-1811 married Clara Frances Graham 1720-1771. They have 7 children, all born before the mother’s death.
The children include their son Robert Frazier 1745-1801
Robert Junior is the father of William Buck Frazier born 1765.

The wife assigned to Robert junior is Elizabeth Sarah Osborne but I don’t believe it. She was born in Pennsylvania and died in North Carolina, while Robert Junior apparently spent his whole life in Virginia. When you click on her link, it shows her married to Aaron Frazier not Robert Frazier. Something is messed up there.

Rootsweb says Robert Senior died before 1771: https://wc.rootsweb.com/trees/145711/I340/-/individual

Wikitree has the best records on Robert Senior, and puts him in Orange County Virginia around 1740. Robert Junior was born in Orange County around 1745. https://www.wikitree.com/wiki/Frazier-1968

There don’t seem to be any real records that Robert Junior existed, but it’s more believable than what Geni has now.

A bit further down in the family tree we have William Buck Frazier Junior: William Buck Frazier, Jr. He has a duplicate profile with a different set of grandparents: William Buck Frazier