Possible Clues:

• Can this destine the family to be furtive?
• Group with ancestral ties
• TV's Clampetts, e.g.
• Morally pure but heartless family group
• Feudin' side, maybe
• Family of Cyril Allen gutted
• Macs grouped together and left in lavatory
• Kilt-clad kin
• Jean Auel's "The __ of the Cave Bear"
• Family coming late at night, all kicking off