A distinctive jutting jawline seen in dozens of pictures from the Habsburg dynasty of Spanish and Austrian kings was caused by inbreeding, researchers have found. The family intermarried multiple times, securing power and influence across a European empire for 200 years - but it carried with it an unusual by-product. The distinctive ‘Habsburg jaw’ can be seen in dozens of paintings, and researchers analysed the deformity, comparing it to the degree of relatedness in the kings and wives pictured in the images. Professor Roman Vilas from the University of Santiago de Compostela said, "The Habsburg dynasty was one of the...