My father's family spelled their names Zalock, Zalac, Zalec and Zallac. I just learned that my grandmother's brother was Frank Zallac. My grandmother's name was Manda. My grandfather's name was Marko. Marko came to the United States in the early 1900s with Frank. Manda had a 10 year old daughter with her named Agnes. I believe her Croatia name was Darla. Manda later had two sons Martin and Thomas and another daughter Kathryn. They lived in Pennsylvania. I am the oldest daughter of Tom Zalock. Looking for relatives.