The Habsburg jaw can be attributed to inbreeding - https

The Habsburg Jaw: Inbreeding and European Royalty

Why royal inbreeding was once considered 'perfectly normal' - 9Honey

Inbreeding Caused the Distinctive 'Habsburg Jaw' of 17th Century Royals That Ruled Europe

Mandibular Prognathism / Inbreeding, different dysmorphic traits! The twist: they reached their findings by studying paintings. Interbreeding and said facial deformities have been statistically confirmed for the first time. Malocclusion with a

History's most famous chin officially linked to centuries of inbreeding

Habsburg Jaw- A Result Of Inbreeding?

Royal portraits confirm Habsburg jaw was caused by inbreeding

Charles II: the last Spanish Habsburg

If inbreeding is so bad, why does it happen in nature? - Quora

Centuries of inbreeding among European royals caused the deformity known as the 'Habsburg jaw