A Suitor from Istanbul (1941)

The grandfather orders his grandson, who is living in Istanbul, to come to Egypt to marry his cousin, or else he would be disinherited. He comes unwillingly, and on the way asks the driver to impersonate him, in order to test the bride. In the meantime, the bride has also asked her maid to impersonate her, to test the groom. The fake bride and the fake groom fall in love, as do the real bride and groom. The father falls in love with his widowed sister in law. When the truth is finally revealed, there is a group wedding.