Prince or Princess
The old humorous answer is Czardines (Sardines)
children.
czarczarina
Philip II, then ruler of Spain, sent a fleet of ships called the Armada to invade England and overthrow Elizabeth I. then ruler of England. It was a disastrous failure.
The ruler of Verona in Romeo and Juliet is prince Esculas The ruler of Verona in Romeo and Juliet is prince Esculas
the ruler
children.
czarczarina
'Tsar' (Caesar), 'TsarItsa' ('Tsarina'), 'Tsesarevich' (for young).
A male heir was called the tsesarevich or tsarevich and a daughter was called a tsarevna, in line with standard Russian naming; -evich and -evna being the proper suffixes for a patronymic. A typical pun/joke made of the title is that the children were named tsardines.
The opposite gender of "czarina" is "czar." A czarina refers to a female monarch or the wife of a czar in Russia, while a czar is a male ruler or emperor. Both terms are derived from the Latin word "Caesar," denoting a position of authority.
"Czarina" is a term used to refer to the female counterpart or wife of a czar (emperor) in Russia. It is derived from the Russian word "tsaritsa." The title is typically used to denote the queen-like status of the female ruler in a monarchy.
A female ruler would be known as a Tsaritsa/Czaritsa, but in English the title is more commonly translated as Tsarina/Czarina. In Russia at least this title would be given to either a female ruler in her own right, or the wife of a Tsar. If the question is about a tsar's daughter, you would call her 'tsarevna'.
The ruler of imperial russia was nicholas2
Czarina Catherine the Great
the ruler of russia was grand prince Evan III and the ruler of the golden hordes was akhmat.
The ruler of Russia during the Enlightenment was Catherine the Great
Dmitry Medvedev is President of Russia.