Complex sentence: He wonders whether the role of king was dangerous in this era, more so than in the period after the Conquest, or whether hereditary diseases were in effect, pointing that most of these kings were members of the same lineage, the House of Wessex.
Split into simpler sentences: He wonders whether the role of king was dangerous in this era, more so than in the period after the Conquest, or whether hereditary diseases were in effect. Pointing that most of these kings were members of the same lineage, the House of Wessex.