Victor Amadeus II in the context of "Savoyard state"

The term Kingdom of Sardinia denotes the Savoyard state from 1720 to 1861. From 1720 to 1847, only the island of Sardinia proper was part of the Kingdom of Sardinia, while the other mainland possessions (principally the Duchy of Savoy, Principality of Piedmont, County of Nice, Duchy of Genoa, and others) were held by the House of Savoy in their own right, hence forming a composite monarchy and a personal union, which was formally referred to as the "States of His Majesty the King of Sardinia". This situation was changed by the Perfect Fusion act of 1847, which created a unitary kingdom. Regardless, historians often use "Sardinia" as a synecdoche to designate the whole Savoyard state from 1720. Due to the fact that Piedmont was the seat of power and prominent part of the entity, the state is also referred to as Sardinia–Piedmont or Piedmont–Sardinia, and sometimes erroneously as the Kingdom of Piedmont.

Before becoming a possession of the House of Savoy, the medieval Kingdom of Sardinia had been part of the Crown of Aragon and then of the burgeoning Spanish Empire. With the Treaty of The Hague (1720), the island of Sardinia and its title of kingdom were ceded by the Habsburg and Bourbon claimants to the Spanish throne to the Duke of Savoy, Victor Amadeus II. The Savoyards united it with their historical possessions on the Italian peninsula, and the kingdom came to be progressively identified with the peninsular states, which included, besides Savoy and Aosta, dynastic possessions like the Principality of Piedmont and the County of Nice, over both of which the Savoyards had been exercising their control since the 13th century and 1388, respectively.

The Peace of Utrecht was a series of peace treaties signed by the belligerents in the War of the Spanish Succession, in the Dutch city of Utrecht between April 1713 and February 1715. The war involved three contenders for the vacant throne of Spain, and had involved much of Europe for over a decade. Essentially, the treaties allowed Philip V (grandson of King Louis XIV of France) to keep the Spanish throne in return for permanently renouncing his claim to the French throne, along with other necessary guarantees that would ensure that France and Spain should not merge, thus preserving the balance of power in Europe.

The treaties between several European states, including Spain, Great Britain, France, Portugal, Savoy and the Dutch Republic, helped end the war. The treaties were concluded between the representatives of Louis XIV of France and of his grandson Philip on one hand, and representatives of Queen Anne of Great Britain, King Victor Amadeus II of Sardinia, King John V of Portugal and the United Provinces of the Netherlands on the other. Though the king of France ensured the Spanish crown for his dynasty, the treaties marked the end of French ambitions of hegemony in Europe expressed in the continuous wars of Louis XIV, and paved the way to the European system based on the balance of power.

Charles Emmanuel III (27 April 1701 – 20 February 1773) was Duke of Savoy, King of Sardinia and ruler of the Savoyard states from his father's abdication on 3 September 1730 until his death in 1773. He was the paternal grandfather of the last three mainline kings of Sardinia. In the War of the Polish Succession, he initially gained Lombardy but later ceded it for smaller territorial gains. During the War of the Austrian Succession, he defended Piedmont against a Franco-Spanish army, winning the Battle of Assietta. The Treaty of Aix-la-Chapelle restored lost lands and expanded his territory. He strengthened ties with Spain through marriage alliances. He chose not to get involved in the Seven Years War and instead focused on administrative reforms and maintaining a well-disciplined army.

Coronations were previously held in the monarchies of Europe. The United Kingdom is the only monarchy in Europe that still practises coronations. Other European monarchies either have replaced coronations with simpler ceremonies to mark an accession (e.g. Norway and Denmark) or have never practised them (e.g. The Netherlands and Belgium). Most monarchies today only require a simple oath to be taken in the presence of the country's legislature.

Charles Emmanuel I (Italian: Carlo Emanuele di Savoia; 12 January 1562 – 26 July 1630), known as the Great and nicknamed Testa di Fuoco (Piedmontese: Testa d'feu; "Hothead", a sobriquet attributed to his aggressive and rash military character), was the Duke of Savoy and ruler of the Savoyard states from 30 August 1580 until his death on 26 July 1630, nearly 50 years later. At the time of his death, he was the longest-reigning Savoyard monarch, a record later surpassed by his great-grandson Victor Amadeus II.

A bold and ambitious ruler, Charles Emmanuel sought to expand Savoyard influence throughout northern Italy during a period marked by the French wars of religion, the Thirty Years' War, and intense rivalry between France and Spain. He led multiple military campaigns – annexing Saluzzo, Trino and Alba but losing Pinerolo and some transalpine territories – and often played European powers against each other in complex diplomatic maneuvers. He was also a patron of the arts and a writer himself.

Charles III of Savoy (10 October 1486 – 17 August 1553), often called Charles the Good, was Duke of Savoy from 1504 to 1553, although most of his lands were ruled by the French between 1536 and his death. Ruling for nearly 49 years, he is the third longest reigning Savoyard monarch, behind Charles Emmanuel I and Victor Amadeus II.