I'd Rather Be Rich (1964)

An updated remake of It Started With Eve (1941). A young heiress is summoned to the bedside of her dying grandfather. The man's last wish is to meet her fiance, but problems arise when the fiance is delayed and a young chemical engineer is persuaded to take his place. When the grandfather suddenly (and secretly) recovers, he uses the situation to his advantage - playing matchmaker in an attempt to ensure his granddaughter's happiness.