The Meyerling incident happened in Austria in the late 1800s within the "royal" circles.
When Rudolf and Mary died, they were 30 and 17, respectively. The love affair was supposed to have lasted for three years. Thus, when the affair began, Mary was 14 and Rudolf 27. Apart from being guilty of a murder of passion, according to the present European and North American laws, the crown prince of Austia was also a "pedophile."