Centuries of inbreeding among European royals caused the deformity

The House of Habsburg produced various Austrian and Spanish kings and queens - and they occupied the throne of the the Holy Roman Empire from 1438-1740.

The Dangers Of Royal Inbreeding

16 Royals Who Suffered From Hereditary Mutations And Defects Caused By Inbreeding

Royals Who Married Their Relatives

The Habsburg Jaw: deformity shaped by royal inbreeding

The Habsburg Jaw: Inbreeding and European Royalty

16 Royals Who Suffered From Hereditary Mutations And Defects Caused By Inbreeding

The Habsburg Jaw and Other Royal Inbreeding Deformities - Owlcation

Inbreeding Among Royals: 14 Monarchs Who Experienced the Side Effects of Incest

Habsburg Family Deformities

The Habsburg Jaw: deformity shaped by royal inbreeding

The Habsburg Jaw: The Royal Deformity Caused By Centuries Of Incest