Merope Gaunt
"Tom Marvolo Riddle," she breathed, panting heavily as she cradled her newborn baby boy, watching him suckle on her breast. "You're so very handsome," she informed him and smiled when his left hand tightened around one of her fingers. "I'm sorry that Daddy can't be here for you, I thought he loved us but I was wrong. I'll protect you though," she promised.
Tom Riddle was a handsome and wealthy muggle who Merope had fallen in love with; well, fallen in love with was such a loose term – infatuated, enamoured, besotted, obsessed. They were all suitable terms for her feelings. When it became apparent that he didn't care for her the way she needed and desired, she turned to magical needs and drugged him.
With both her brother and her father imprisoned, she was free to be with whomever she wanted, and she wanted him. Obviously the loneliness that had suddenly been sprung upon her had some influence on her behaviours and feelings but he was the one she wanted.
For months he was drugged, glazed eyes and an inability to take his mind off of her and she loved every second of it. But she knew that deep down he loved her and that it wasn't the potion having the effect. So she stopped the drug. Once he was free from the poison that had been running through his veins, his disgust at her and what had occurred was enough to drive him away only minutes after being told she was pregnant.
Months later and here she was, alone in an orphanage with her newborn son and Mrs Cole.
The milk her son had consumed was enough to send him to sleep and she allowed the older woman to cradle him gently and take him to bed, placing him into a small crib beside her. Tiredness was seeping into her bones and her heart felt extremely heavy, her magic almost depleted.
She didn't take her eyes off of her son, even when she closed her eyes for the final time.