Complex sentence: Huffman married September 1,1910 Edith née Gillmore, daughter of another US Army officer during the Civil War, Isaac Gillmore, First Lieutenant of the 2nd Regiment Iowa Volunteer Cavalry.
Split into simpler sentences: Huffman married September 1,1910 Edith née Gillmore, daughter of an officer in the US Army during the Civil War. Her father was Isaac Gillmore, First Lieutenant of the 2nd Regiment Iowa Volunteer Cavalry.