Centuries before, he heard of the many women and children that disappeared, and his sister, Elisabeta, was among them. However, he didn't find a trace of her, coming to the assumption that she had been killed. Unfortunately, it is revealed in Dark Legacy that Sergey had actually kidnapped her and kept her prisoner for centuries. Everyone agrees that after she has healed, Traian will be contacted to tell him the good news.
Until Maxim was destroyed, he chose to stay away from Mikhail and as many of his people as possible to keep them safe. But, with Maxim's death, he was able to rejoin Carpathian society.