Tragedy struck the Spanish royal household..

… in 1934 when Beatriz was driving a car in Austria on vacation with her brother Gonzalo as a passenger.  She swerved to avoid a bicyclist, and everything seemed fine, except the next day, her brother died.  He had the genetic hemophilia disease and was bleeding internally.

(Photos: featured: the Alfonso and Ena of Spain family; Below Gonzalo the youngest child who died of hemophelia)