Christian Ward was the elder brother of Grant, and a U.S. Republican Senator for Massachusetts.
His first adult appearance, in "A Fractured House", raised as many questions as it answered, since he is the 'senator with deep pockets' who funded Glenn Talbot's witch-hunt against S.H.I.E.L.D., but he was willing to support the team in return for custody of his brother, whom he declared he would bring to trial and justice. Grant told Skye that Christian could not remotely be trusted, just as his elder brother was making basically the same point to Coulson.
Grant kidnapped his older brother and dragged him to the well, forcing a confession that Christian was responsible for torturing their little brother and used Grant as his tool.
Christian Ward was found dead in an apparent murder-suicide involving his mother and father, although Grant Ward was implied to be responsible.