Willis B. MORROW married Mary Ann MULLINS 26 Aug 1845 in Linn Co, MO. His family in 1850 Linn Co census included daughters Luane and Sarrena. They they disappeared.
Mary Ann's sister, Sarah Frances married William HATCHER 27 Mar 1849 and the Hatchers moved to Woodland,Yolo Co, CA in 1852. I'm speculating the two sisters may have moved together, perhaps with other Hatchers. Ring a bell?