Klára was born in 1853. Klára's father was István Körtvély and her mother was Sára Tarkó. She had a brother named László. She was the older of the two children. She had two half-brothers and two half-sisters, named János, Sándor, Mária and Sára. She died at the age of 86 on March 11th, 1939 in Tiszabura.1