Does the 1920 census say she is a widow or still married? Where did the 1910 census say he was born? Have you looked for him in the WWI draft cards for Bosque Co.? You would probably get a more complete name for him if nothing else. Then I think I would try looking for him in 1900 age 14 with his parents. Did Bosque Co. keep death records during that time? Does Bosque Co. have a list of soldiers who died in WWI? Also a great number of people did in the flu epidemic of 1918. He could have been one of them.