Complex sentence: Robert married Rose Koenig of Goldendale, Washington in 1911 in Ann Arbor, Michigan and they had two children, Ralph (born 1913) and Ruth (born 1914).
Split into simpler sentences: Robert married Rose Koenig of Goldendale, Washington, in 1911 in Ann Arbor, Michigan. They had two children, Ralph (born 1913) and Ruth (born 1914).