Those plays are An Ideal Husband and A Woman of No Importance.
In one of this man's plays, Sir Robert Chiltern's sister Mabel marries Lord Goring, and in another, Gerald turns out to be the son of Lord Illingworth. Those plays are An Ideal Husband and A Woman of No Importance. The title character of an another of his plays believes her husband is having an affair with Mrs. Erlynne, who is actually her mother. In another play by him, Jack Worthing turns out to be the brother of (*) Algernon Moncrieff. For 10 points, name this author of Lady Windermere's Fan and The Importance of Being Earnest.
In one of this man's plays, Sir Robert Chiltern's sister Mabel marries Lord Goring, and in another, Gerald turns out to be the son of Lord Illingworth.
Oscar Fingal O'Flahertie Wills {Wilde}