Lasthenes was a highly placed official under Demetrius II Nicator. His titles of “kinsman” and “father” were court designations rather than necessarily descriptions of blood relationship.
Lasthenes appears in the historical material of 1 Maccabees in connection with Demetrius II and royal correspondence.
According to the source, he was a native of Crete who raised an army for Demetrius and helped him gain the throne of Syria. His position was probably that of prime minister or grand vizier.