László was born on November 17th, 1888 in Kocsér.1 László's father was Ferenc Körtési and his mother was Erzsébet Urbán. His paternal grandparents were László Körtvélyesi and Mária Molnár. He had two brothers and a sister, named Körtési, Körtési and Erzsébet. He was the second youngest of the four children. He died at the age of 44 on June 7th, 1933.1