In the play 'The Merchant of Venice' by William Shakespeare, Jessica, the daughter of Shylock (a ruthless jewish moneylender) seems to be ashamed of her father and his despicable money-grabbing ways - she is socially embarrassed by him and would like to break the connection but can see only one way to escape and that is marriage. If she married a Christian then she would in a way be 'laundering' her social status awful as that sounds to us today. As she says herself :
"I shall be saved by my husband. He hath made me a Christian"