Possible Clues:

• Female House of Lords member
• Outstanding, but not Liberal, member of house
• She's entitled to have errors excepted, in the fourth estate
• Lady, incomparable, not fifty
• Baron's bride, e.g.
• Exercise before sangrias on vacation is noble
• Titled lady
• Nobility member
• Lady journalists penning leaders for exhausted editor
• Noble, unrivalled Liberal must stand down