I know a family, now mostly deceased whose mother fed another baby after feeding her own. That baby could not keep down cow’s milk.
He grew up to be a moderately well known businessman and politician.
I forgot to mention that the baby’s Mother had no milk for some reason.
My great aunt was suckled by an inlaw who lived in the same county after her mother died just after giving birth, so the father could continue to work on the railroad while the eldest son who was 15 or 16 took care of the other children.
She grew up to be a charming, doting, and well educated mother herself.