Baldwin marries Adelaide del Vasto in 1113;…

Baldwin marries Adelaide del Vasto in 1113; he had abandoned his Armenian wife Arda in 1108, on the pretext that she had been unfaithful, or, according to Guibert of Nogent, because she had been raped by pirates on the way to Jerusalem.

It is more likely however that she was simply politically useless in Jerusalem, which has no Armenian population.

Under the marriage agreement, if Baldwin and Adelaide have no children, the heir to the kingdom will be Roger II of Sicily, Adelaide's son by her first husband Roger I. Technically the marriage to Adelaide is bigamous because Arda is still alive in a monastery in Jerusalem, and it will later cause many problems both for Baldwin and Patriarch Arnulf, who has sanctioned it.