What's the noun for gentlewoman? Here's the word you're looking for.
gentleman
(chiefly historical) A man of gentle but not noble birth, particularly a man of means (originally ownership of property) who does not work for a living but has no official status in a peerage; (Britain law) an armiferous man ranking below a knight.
“Ask the gentleman what his choice of beverage will be this evening.”
“Did I not say to you that his manners were those of a perfect gentleman?”
“As we see in the Theognidean corpus, the ideal of the aristocratic gentleman gives little importance to the old qualities of physical courage or skill in war.”
gentle
(archaic) A person of high birth.
(archaic) A maggot used as bait by anglers (Can we add an example for this sense?)
“He portrays a sensitivity and gentleness that few actors can accomplish so perfectly.”
“One part of the objection still remains unanswered, that founded on the instinctive feeling which prescribes modesty and gentleness as virtues peculiarly feminine.”
“He should, with complete gentleness and obedience, accept the order given him.”
“She appeared on a great barge, decorated lavishly, with boys fanning her and her gentlewomen standing around her like sea nymphs.”
“Her father had invited a couple hundred noblemen and gentlewomen to attend this grand feast, for that was where Sir Questing would propose to Desiree.”
“In 1880 a Mrs Millner, a member of the Religious Society of Friends, started the Industrial Association in order to help distressed Irish gentlewomen in Mountmellick.”