Little Nellie of Holy God was a very holy girl who died from tuberculosis at the age of five. She made her First Holy Communion when four years old, and her life prompted the then pope, Pope Pius X, to lower the age for First Holy Communion from 12 to seven years.
Little Nellie’s grave: Own picture. Feel free to use it.
Little Nellie of Holy God: Taken from Wikimedia Commons. https://commons.wikimedia.org/wiki/File:Little_Nelly_of_Holy_God.jpg