Possible Clues:

• Belonging to the house of Lancaster, possibly
• Passed down from Lancaster?
• Coming down the tree, like voices prophesying war?
• Clear ants out of the house
• With reference to forerunners from Lancaster incorrectly recorded
• Traces an original line - like this?
• An essential pole switched, then handed down
• A family affair headed off really regularly by old relations
• From the family tree
• Genetic modification could produce clean rats