Avogadro was born in Italy in 1776. He was part of a noble family and graduated from his schooling at 20. He then dedicated his life to math and science. He taught at a high school near where his family owned land. He started a hypothesis about physics and sent it to a French journal who published it in 1815. He then wrote a follow up paper in 1815 confirming his hypothesis about gas density. He became a professor at the University of Turin in 1820. He continued research and made discoveries during this time including his famous discovery on the mass of the Atomic-Molecular Theory (see the discovery section). Avogadro then became active in the revolution against King Victor Emanuel I and the school fired him because of it in 1823. He then went back to be a teacher in 1833. Avagadro lived a highly religious life and married Felicita Mazzé, they had six children. He later died in 1856 at the age of 79.