Gábor was born in August 1876 in Budapest and his baptism took place there on August 16th, 1876.1 Gábor's father was Lajos Peterdy and his mother was Karla Matasics. His paternal grandparents were Dr Gábor Peterdy and Paula Khol-Babocsay. He had a sister named Mária. He was the older of the two children. He died at the age of 4 in 1880 in Fiume.2