Tsar
title given to a male monarch in Russia, Bulgaria and Serbia
Was the son of Tsar Nicholas a daredevil?
Tsar Nicholas had only one son, Alexei.  Alexei had hemophilia and had to be carefully guarded. Hemophilia is the inability for blood to form clots, making any small cut dangerous.
Who was the son of Tsar Nicholas? What did #1 suffer from medically? With #2, is one able to be injured?