Mihály was born on September 20th, 1816. Mihály's father was Mihály Körtvélyessy and his mother was Katalin Juhász. His paternal grandparents were Körtvélyessy and Markovics. He had three brothers and a sister, named János, György, Miklós and Mária. He was the second oldest of the five children. He died at the age of 55 on March 5th, 1872.