Crown prince

Until the late twentieth century, no modern monarchy adopted a system whereby females would be guaranteed to succeed to the throne (i.e. absolute primogeniture).

[citation needed] In Europe, where primogeniture governed succession to all monarchies except those of the papacy and Andorra, the eldest son or (more recently) eldest child of the current monarch fills the role of crown prince or princess, depending upon whether females of the dynasty enjoy personal succession rights.

Male precedence has been abolished in Belgium, Denmark, Luxembourg, Norway, Sweden and the Netherlands, as well as in the United Kingdom and other Commonwealth realms pursuant to the Succession to the Crown Act 2013.

In some monarchies, those of the Middle East for example, in which primogeniture is not the decisive factor in dynastic succession, a person may not possess the title or status of crown prince by right of birth, but may obtain (and lose) it as a result of an official designation made on some other legal or traditional basis, such as former crown prince Hassan bin Talal of Jordan.

In Luxembourg, the heir apparent bears the title of hereditary grand duke (German: Erbgroßherzog, Luxembourgish: ierfgroussherzog); along with hereditary prince, it was also the title borne by the heirs apparent to the thrones of the grand duchies, sovereign duchies and principalities, and of mediatized princely families in the German monarchies abolished in 1918.