ご令夫人にもよろしくお伝えください。
Please give my regards to your wife as well.
令夫人は大変美しい方ですね。
Your wife is a very beautiful person, isn't she?
Compound of 令 (rei, 'good, excellent, honorable') and 夫人 (fujin, 'wife, Mrs.'). The prefix 令 is used in honorific expressions to show respect.