Duke in the context of "List of Polish rulers"

A magnate is a man from the higher nobility, a man who belongs to the high office-holders, or a man in a high social position, by birth, wealth or other qualities in Western Christian countries since the medieval period. It also includes the members of the higher clergy, such as bishops, archbishops and cardinals. In reference to the medieval, the term is often used to distinguish higher territorial landowners and warlords, such as counts, earls, dukes, and territorial-princes from the baronage. In Poland the szlachta (nobles) constituted one of the largest proportions of the population (around 10-12%) and 'magnat' refers to the richest nobles, or nobles of the nobility - even though they had equal voting rights in Poland's electoral monarchy.

A voivodeship (/ˈvɔɪvoʊdʃɪp/ VOY-vohd-ship) or voivodate is the area administered by a voivode (governor) in several countries of central and eastern Europe. Voivodeships have existed since medieval times and the area of extent of voivodeship resembles that of a duchy in western medieval states, much as the title of voivode was equivalent to that of a duke. Other roughly equivalent titles and areas in medieval Eastern Europe included ban (bojan, vojin or bayan) and banate.

In a modern context, the word normally refers to one of the provinces (województwa) of Poland. As of 2024, Poland has 16 voivodeships.

The doge of Venice (/doʊdʒ/ DOHJ) – in Venetian, doxe de Venexia [ˈdoze de veˈnɛsja] – was the doge or highest role of authority within the Republic of Venice (697–1797). The word doge derives from the Latin dux, meaning 'leader', and Venetian for 'duke', highest official of the republic of Venice for over 1,000 years. In Italian, the cognate is duce (/duːtʃeɪ/ DOO-chay, Italian: [ˈduːt͡ʃe]), one of National Fascist Party leader Benito Mussolini's titles. The title is also cognate to the English "duke", with a different meaning.

Originally referring to any military leader, it became in the Late Roman Empire the title for a leader of an expeditionary force formed by detachments (vexillationes) from the frontier army (limitanei), separate from, but subject to, the governor of a province, authorized to conduct operations beyond provincial boundaries.

King is a royal title given to a male monarch. A king is an absolute monarch if he holds unrestricted governmental power or exercises full sovereignty over a nation. In a modern context, the title may refer to the ruler of one of a number of modern monarchies (either absolute or constitutional). The title of king is used alongside other titles for monarchs: in the West, emperor, grand prince, prince, archduke, duke or grand duke, and in the Islamic world, malik, sultan, emir or hakim, etc.

The term king may also refer to a king consort, a title that is sometimes given to the husband of a queen regnant, but the title of prince consort is more common.

The Oireachtas (/ˈɛrəktəs/ EH-rək-təs; Irish: [ˈɛɾʲaxt̪ˠəsˠ]), sometimes referred to as Oireachtas Éireann, is the bicameral parliament of Ireland. The Oireachtas consists of the president of Ireland and the two houses of the Oireachtas (Irish: Tithe an Oireachtais): a lower house called Dáil Éireann and an upper house called Seanad Éireann.

The houses of the Oireachtas sit in Leinster House in Dublin, an eighteenth-century ducal palace. The directly elected Dáil is the more powerful of the houses of the Oireachtas.

Karl August, sometimes anglicised as Charles Augustus (3 September 1757 – 14 June 1828), was the sovereign Duke of Saxe-Weimar and of Saxe-Eisenach (in personal union) from 1758, Duke of Saxe-Weimar-Eisenach from its creation (as a political union) in 1809, and grand duke from 1815 until his death. He is noted for the intellectual brilliance of his court.

A boyar or bolyar was a member of the highest rank of the feudal nobility in many Eastern European states, including Bulgaria, Kievan Rus' (and later Russia), Moldavia and Wallachia (and later Romania), Lithuania and among Baltic Germans. Comparable to Dukes/Grand Dukes, Boyars were second only to the ruling princes, grand princes or tsars from the 10th to the 17th centuries.

Archduke (feminine: archduchess; German: Erzherzog, feminine form: Erzherzogin) was the title borne from 1358 by the Habsburg rulers of the Archduchy of Austria, and later by all senior members of that dynasty. It denotes a rank within the former Holy Roman Empire (962–1806), which was below that of emperor, and roughly equal to that of king, prince-(arch)bishop, and grand duke, but above that of sovereign prince and duke.

The territory ruled by an archduke or archduchess was called an archduchy. All remaining archduchies ceased to exist in 1918. The current head of the House of Habsburg is Karl Habsburg.