Károly's father was Pál Asbóth and his mother was Rozália Kovács. His paternal grandparents were Pál Asbóth and Julianna Németh. He had a brother and a sister, named Sándor and Rozália. He was the second oldest of the three children. He died at the age of 83 on May 12th, 1912 in Leányfalu.2