I have come across two separate published pieces asserting how much Oscar Wilde's The Importance of Being Earnest was indebted to this earlier play by William S. Gilbert. That seems true, as far as it goes; but there's a reason why Wilde's play is a staple of the modern repertory while Gilbert's has faded into relative obscurity. Earnest trumps Engaged in scope as well as sheer wit: Gilbert's satirical fable, though funny and clever in its way, is relentlessly one-note, and that note is rather a sour one. Beyond its academic value, it seems to have little to recommend it.
The story concerns Cheviot Hill, a rich but overly thrifty fellow who tends to fall head-over-heels with every woman he sets eyes upon. Because of this, he has a protector of sorts, one Belvawney, who is paid £1000 a year to keep him from getting married. If and when Cheviot does succumb, Belvawney's income reverts to a Mr. Symperson.
Thus does Gilbert equate matrimony with a business transaction; the whole of Engaged sets about proving that everybody will do anything for money, love (if it even exists) be dashed. Cheviot proposes to three different young ladies, each of whom is eager to improve her financial situation by accepting. The outcome ultimately hinges on whether Cheviot was actually standing in Scotland or England when he made one of those proposals--a device that can only be called Gilbertian, the kind of whimsical frivolity that fuels his best collaborations with Sir Arthur Sullivan. But there's no Sullivan here to provide bright and airy music to temper Gilbert's sardonic cynicism; that's why Engaged finally feels so claustrophobically repetitive and disagreeable.