Possible Clues:

• Forebear -- no trace, regrettably, across South
• Forebear caught stabbing a wise old king
• In reduced circumstances, Torquay is the answer for great-granny, perhaps?
• Escort an eccentric old relative
• Foregoer
• Forefather? Sadly no trace, son accepted
• Person discovered through 23andMe
• Source of stability getting established for hospital's early version
• Seth, to Noah
• One of an older generation having son react badly