¿Cómo fue el padre del narrador morir?

From the text:

It seemed to me as though he understood, from my poor description, something of the vibrant personality that had been my father's, and something too of the love my mother had for him, making it a vital, living force, with a spark of divinity about it, so much that when he died that desperate winter, struck down by pneumonia, she lingered behind him for five short weeks and stayed no more.