Complex sentence: There, in 1862, he married his childhood sweetheart, Abbie Palmer Gifford, and she returned with him to the oil fields where they lived in a one-room shack along Oil Creek and he and Ellis worked the Wamsutta Oil Refinery.
Split into simpler sentences: There, in 1862, he married his childhood sweetheart, Abbie Palmer Gifford. Abbie returned with him to the oil fields where they lived in a one-room shack along Oil Creek and he and Ellis worked the Wamsutta Oil Refinery.