My daughter, Wendy Whiteman, and I recently co-authored a genealogy book about my g-g-grandfather, who was killed at the Alamo, and his descendents. A Visual History Record of Alamo Defender Gordon Cartwright Jennings' Family was released in March 2014 with a signing at the Alamo Society Symposium at the Menger Hotel in San Antonio. 

The book contains images of the Jennings and Williams families (both Texas pioneer families) down to me and my daughter. It also has the genealogy of the line.