Father Leo John of the Heart of Jesus Dehon. Founder and first Superior General (June 28, 1878 – August 12, 1925). He was born on March 14, 1843 in La Capelle (France). He was ordained in Rome on December 19, 1868. He wrote the Constitutions on July 31, 1877 and made his first profession on June 28, 1878, the founding date of the Institute. He died in Brussels on August 12, 1925 and was buried in the church he founded, San Martino in San Quentin (France).