Louise Ruehl was born in Marburg, Hesse on the 16th of January, 1865. She immigrated to the United States and found a home in Maryland. It was there that she met Adolph Schlag, a fellow German immigrant whom she married May 25th, 1890 in Baltimore, MD. Together they had five children: Adolph, Catherine, Marie, Helen, and Margaret. She died November 8th, 1946 in Baltimore and was buried in that same city.