Complex sentence: Before long, the Lordship of Hebron was granted to Raynald who also married Stephanie of Milly, who was the wealthiest heiress in the Holy Land, because she was the lady of Oultrejordain.
Split into simpler sentences: Before long, the Lordship of Hebron was granted to Raynald. He also married Stephanie of Milly, who was the wealthiest heiress in the Holy Land as the lady of Oultrejordain.