Complex sentence: At the age of 47, he married 18-year-old Madeleine Talmage Force, sister of Katherine Emmons Force and younger daughter of William Hurlbut Force and Katherine Arvilla Talmage.
Split into simpler sentences: At the age of 47, Jack married 18-year-old Madeleine Talmage Force, the sister of Katherine Emmons Force. Katherine and Madeleine's parents were William Hurlbut Force and Katherine Arvilla Talmage.