Complex sentence: On September 14,1958, Peterson married Deanne Lenz, whom he had been dating since their junior year of High School; the couple resided in Clear Lake, Iowa, a short drive to Mason City, where both worked.
Split into simpler sentences: On September 14,1958, Peterson married Deanne Lenz, whom he had been dating since their junior year of high school. The couple resided in Clear Lake, Iowa, a short drive to Mason City, where both worked.