Lazar Hrebeljanović in the context of "South Morava"

Stefan Lazarević (Serbian Cyrillic: Стефан Лазаревић; c. 1377 – 19 July 1427), also known as Stefan the Tall (Serbian: Стефан Високи, romanized: Stefan Visoki), was a Serbian ruler as prince (1389–1402) and despot (1402–1427). He was also a diplomat, legislator, ktetor, patron of the arts, poet and one of the founding members of the Order of the Dragon. The son of Prince Lazar Hrebeljanović, he was regarded as one of the finest knights and military leaders of his time. After the death of his father at the Battle of Kosovo, he became ruler of Moravian Serbia and ruled with his mother Milica (a Nemanjić), until he reached adulthood in 1393. Stefan led troops in several battles as an Ottoman vassal, until asserting independence after receiving the title of despot from the Byzantines in 1402.

Becoming a Hungarian ally in 1403–04, he received large possessions, including the important Belgrade and Golubac Fortress. He also held the superior rank in the chivalric Order of the Dragon. During his reign, there was a long conflict with his nephew Đurađ Branković, which ended in 1412. Lazarević also inherited Zeta, and waged war against Venice. Since he was childless, he designated his nephew Đurađ as heir in 1426, a year before his death.

Moravian Serbia (Serbian: Моравска Србија, romanized: Moravska Srbija), the Principality of Moravian Serbia (Serbian: Кнежевина Моравска Србија, romanized: Kneževina Moravska Srbija) or the Realm of Prince Lazar was the largest and most powerful Serbian principality to emerge from the ruins of the Serbian Empire (1371). Moravian Serbia was named after Morava, the main river of the region. The independent principality in the region of Morava was established in 1371, and attained its largest extent in 1379 through the military and political activities of its first ruler, prince Lazar Hrebeljanović. In 1402 it was raised to the Serbian Despotate, which would exist until 1459.

The House of Lazarević (Serbian Cyrillic: Лазаревић, pl. Lazarevići / Лазаревићи, pronounced [lazǎːrɛv̞itɕ]) was a Serbian medieval royal family, which ruled Moravian Serbia and the Serbian Despotate.

Morava architectural school (Serbian: Moravska škola arhitekture, Serbian Cyrillic: Моравска школа архитeктуре), also known as the Morava style (Serbian: Moravski stil, Serbian Cyrillic: Моравски стил), or simply as the Morava school (Serbian: Moravska škola, Serbian Cyrillic: Моравска школа), is an ecclesiastical architectural style that flourished in the Serbian Late Middle Ages (ca. 1370–1459), during the reign of the Lazarević and Branković dynasties.

The churches and monasteries were built by the rulers Lazar Hrebeljanović (1370–1389), Stefan Lazarević (1402–1427) and Đurađ Branković (1427–1456) and their nobility. The first endowment was the royal tomb of Ravanica. The main achievement of the Morava School is the splendor of the sculptural elements. The decorative stone plastic of the Moravska School represents one of the most original artistic achievements of medieval Serbian art. Decorative elements characteristic of this artistic school typically consist of geometric arabesque with stylized floral ornaments and interlaces, which include only scarce figurative details. Sculpture was usually painted, and thus, very vivid in effect.