It's All Relative

Seven fiancees have been frightened off by the hero's unappealing step daughter, a lady twice his age. He is desperate to conceal her from his newest intended, but plans go awry and even a mammoth dowry fails to convince a tippling swashbuckler to take her off his hands. When he inveigles the bride to be's widowed father into a marriage of convenience, he creates a maze in which his wife will be his granddaughter and he will become his own grandfather in law.