Valentine is the husband of Jocelyn Fairchild. After Jocelyn left and went into hiding with the Mortal Cup, she, unbeknownst to him, had their daughter,Clary, whom she raised in the mundane world.
For eighteen years, she was able to evade capture by the Circle. However, when some of his followers saw Clary at a club, they recognized Jocelyn in her and found that she was alive. He ordered his men to bring Jocelyn back unharmed and with the Cup, but she drank a potion that put her in a state of deep sleep, preventing him from extracting the location of the Cup from her, frustrating him. It became evident, however, that Valentine still loved Jocelyn, in his own way. When he found out about Jocelyn's daughter, he told his men to bring her to him.