When Walker Ramsey Deppen was born on 16 December 1879, in Franklin Township, York, Pennsylvania, United States, his father, Adam Deppen, was 43 and his mother, Sarah Catherine Heffelfinger, was 39. He married Attilla Catherine Smith in January 1898, in Lehigh, Pennsylvania, United States. They were the parents of at least 6 sons and 4 daughters. He lived in Lower Macungie Township, Lehigh, Pennsylvania, United States in 1910 and Allentown, Lehigh, Pennsylvania, United States for about 20 years. He died on 5 July 1948, in Pasadena, Los Angeles, California, United States, at the age of 68, and was buried in Arlington Memorial Park, Mickleys, Whitehall Township, Lehigh, Pennsylvania, United States.