Rafał Leszczyński (1526–1592), of Wieniawa coat of arms, was a

voivode Voivode ( ), also spelled voivod, voievod or voevod and also known as vaivode ( ), voivoda, vojvoda, vaivada or wojewoda, is a title denoting a military leader or warlord in Central, Southeastern and Eastern Europe in use since the Early Mid ...

Brześć Kujawski Brześć Kujawski (Polish pronunciation: ; ) is a town in the Kuyavian-Pomeranian Voivodeship in central Poland. Once a royal seat of Kuyavia, the town has been the seat of one of two small duchy, duchies into which Kuyavia had been temporarily di ...

from 1545 to 1550;

castellan A castellan, or constable, was the governor of a castle in medieval Europe. Its surrounding territory was referred to as the castellany. The word stems from . A castellan was almost always male, but could occasionally be female, as when, in 1 ...

Śrem Śrem () is a town on the Warta river in central Poland. It is the seat of Śrem County in the Greater Poland Voivodeship. As of 1995, the population of Śrem was 29,800. Śrem is to the south of Poznań, a local road junction on the road from ...

in 1580,

starost Starosta or starost (Cyrillic: ''старост/а'', Latin: ''capitaneus'', ) is a community elder in some Slavic lands. The Slavic root of "starost" translates as "senior". Since the Middle Ages, it has designated an official in a leadersh ...

Radziejów Radziejów (Polish pronunciation: ) is a town in Poland, in Kuyavian-Pomeranian Voivodeship, about south of Toruń. It is the capital of Radziejów County. It is located in the historic region of Kuyavia. Its population is 5,696 (2010). History ...

sejm marshal The Marshal of the Sejm (, ) is the speaker (chair) of the Sejm, the lower house of the Polish Parliament. The office traces its origins to the 15th century. In modern Poland, the full title is Marshal of the Sejm of the Republic of Poland (). ...

, one of the leaders of the

Executionist movement The Executionist movement was a 16th-century political movement in the Kingdom of Poland and, later, the Polish–Lithuanian Commonwealth. It was popular among lesser, middle and even some higher nobility, and it also enjoyed the support of the Pol ...

and Polish

Reformation The Reformation, also known as the Protestant Reformation or the European Reformation, was a time of major Theology, theological movement in Western Christianity in 16th-century Europe that posed a religious and political challenge to the p ...

Biography

He was an opponent to

Zygmunt August Sigismund II Augustus (, ; 1 August 1520 – 7 July 1572) was King of Poland and Grand Duke of Lithuania, the son of Sigismund I the Old, whom Sigismund II succeeded in 1548. He was the first ruler of the Polish–Lithuanian Commonwealth and ...

's marriage with Barbara Radziwiłłówna (around 1548); also around that time he joined the Czech Brethren and became one of the leading Polish representatives of that faith. In 1550 he resigned his voivode office, and was elected a deputy to the

Sejm The Sejm (), officially known as the Sejm of the Republic of Poland (), is the lower house of the bicameralism, bicameral parliament of Poland. The Sejm has been the highest governing body of the Third Polish Republic since the Polish People' ...

and later became

Marshal of the Sejm The Marshal of the Sejm (, ) is the speaker (chair) of the Sejm, the lower house of the Polish Parliament. The office traces its origins to the 15th century. In modern Poland, the full title is Marshal of the Sejm of the Republic of Poland (). ...

. He was a vocal opponent of the

Roman Catholic The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international institut ...

clergy Clergy are formal leaders within established religions. Their roles and functions vary in different religious traditions, but usually involve presiding over specific rituals and teaching their religion's doctrines and practices. Some of the ter ...

and a supporter of the

Union of Lublin The Union of Lublin (; ) was signed on 1 July 1569 in Lublin, Poland, and created a single state, the Polish–Lithuanian Commonwealth, one of the largest countries in Europe at the time. It replaced the personal union of the Crown of the Kingd ...

. He was the father of Andrzej Leszczyński. 1526 births 1592 deaths Rafal Polish Calvinist and Reformed Christians {{Poland-noble-stub