Possible Clues:

• Single woman, subject of ancient tax? That's not new
• One left wides — I make runs between them
• Woman in black, perhaps
• She may remarry
• I do get in here when she's left
• To whom a husband leaves an estate
• Mrs Trollope's was Barnaby, and she later married
• Bereaved, but making marriage vow within two weeks
• ___'s cruse (endless supply)
• Bubbly dowager?