The Adama family is a Tauron family that lives in Caprica City. They have strong connections to their homeworld, other local Taurons, and to the Tauron-based criminal organization, Ha'la'tha.
The brothers Joseph and Sam Adama immigrated to Caprica as children after they were orphaned in the Tauron Civil War. ("Dirteaters") Joseph assumed the name Adams, to fit in better with Caprican society. ("Pilot") He married Shannon, who was also of Tauron descent. Their children, Tamara and William, were born on Caprica.
Shannon and Tamara Adama were both killed in the MAGLEV bombing, leaving Joseph to take care of his son, Willie. ("Pilot")