He has been living on the streets since his mother succumbed to drug addiction.

I was only a lad of six when my mother succumbed to a lung ailment.

(His mother succumbed to the same disease a few years earlier.)

My mother succumbed to her own broken heart.

On May 10, 1895, his mother succumbed to tuberculosis.

He is heartbroken when his mother succumbs to soma and dies.

That same year his mother succumbed to breast cancer.

His mother succumbed to breast cancer several years before the novel began.

His mother couldn't stand to live alone and succumbed to the death curse that had been imposed on her.

Even his mother had succumbed to the modern world on that one.