Sanford and Son (1972)

S3E20 Will the Real Fred Sanford Please Do Something?

A woman from Fred's past, with whom he shared a wild night while intoxicated, pays a visit and mistakenly believes that Grady is actually Fred. Grady is taken aback, and Lamont isn’t much assistance in clarifying the mix-up. However, Grady faces an even more significant dilemma when the woman insists that he must fulfill the marriage promise Fred made to her.