There is also a melodramatic cautionary tale (remember those?) from circa 1950 called Our Very Own and I can't remember the stars (maybe Jeanne Crain?), but the plot concerns a young woman who discovers that she is adopted.
She seeks out her birth mother to find out the woman is a poverty-stricken slattern who doesn't wear make-up.
Moral: don't seek out your birth parents.
This is a real sob-story piece of garbage. Go ahead and watch it.
"If my life weren't funny, it would just be true. And that would be unacceptable."
--Carrie Fisher