For this they were awarded the rank of knight and a coat of arms, which depicts bends of the Szreniawa River in the form of a letter S of white colour on a red background, instead of the Szreniawici cross, with the motto Patriam Versus (Turned to the Homeland).

This theory assumes, in its later part, that, in the 15th century, the Polish chronicler Jan Długosz incorrectly ascribed the origin of the coat of arms of the fellowship (Szreniawa without a cross), and other heraldists accepted this view.

One of the Szreniawici was a canon at the Wawel court, and people using this coat of arms belonged to the inner circle of Bolesław II the Generous, according to Jan Długosz, in Annals or Chronicles of the Famous Kingdom of Poland (Roczniki czyli Kronikisławnego Królestwa Polskiego).

[3] Successive members of the family took up positions of bishops, for example, Piotr, Archbishop of Gniezno mediated between the princes of the Piast dynasty during the congress in Łęczyca in 1180.

[4] The family performed important functions at the court of the Piast dynasty and extended their estates through investing in land, mainly within the territory of the Małopolska province.

The economic foundation of the family rested on the exploitation of salt mines in Kraków province, the mineshafts being leased from rulers of Poland.

In the 17th and 18th centuries they were located in Lubomierz, Nowy Wiśnicz, Bochnia, Wieliczka, Łańcut, Baranów Sandomierski, Puławy, Rzeszów, Równe, Tarnów, Jarosław, Przeworsk, and Janowiec upon the Vistula, among others.

[8] Many estates were located in the territories of the largest Polish cities: Warsaw (e.g. Mokotów, Ujazdów, Czerniaków), Kraków (Wola Justowska, Kamienica Pod Baranami), Rzeszów (castle), Sandomierz, and Lviv (then Lwów).

The Lubomirski family enjoyed political, military, and economic influence, which was concentrated in the provinces of Kraków, Sandomierz, Stanisławów, and Ruthenia, to eventually cover the whole area of the Polish–Lithuanian Commonwealth.

In addition to purchasing properties, the Lubomirski family leased rich royal estates, such as the Starosties of Spisz, Sandomierz, and Sącz.

They also introduced enlightened social practices, such as granting equal rights for subjects, allowing Jews to buy properties in private towns and to build houses, and vesting them with judicial powers.

The family estates often hired people from the lowest class, caring about their education, offering a place of residence, clothing, and a salary paid twice a year.

[9] The family, originally small in number, grew considerably, which led to divisions of material wealth but enhanced political influence, due to having the support of more people in the Sejms, in the Senate, or at the royal court.

Katarzyna Lubomirska (c. 1585 – 1620) was the wife of Konstanty Bazyli II, Prince of Ostróg, who was closely related to Bolesław IV, a descendant of Konrad Mazowiecki.

[citation needed] Jerzy gave shelter to king John II Casimir on his estate in Lubowla (today’s Slovakia) and launched a counteroffensive of Polish troops.

In 1660, at the head of private and royal armies, Prince Jerzy Sebastian Lubomirski conducted a lightning campaign that ended with the defeat of Russian forces at Cudnów and Połonka.

Prince Hieronim Augustyn, a member of the Order of Hospitallers, devoted his life to fighting the Ottoman Turks, who were considered a cultural threat to European civilization.

[15] To build his numerous residences, Prince Stanisław Herakliusz Lubomirski (1642 – 1702) hired Tylman of Gameren, later court architect to King Michał Korybut Wiśniowiecki.

[16] An example of building in the very centre of Warsaw is a reconstruction of the Copper-Roof Palace (Pałac Pod Blachą), commissioned in the early 18th century by Jerzy Dominik Lubomirski.

Above all, he wished to care for the health of the Varsovians, wherefore he decided to surround the city, on both sides of the Vistula, with an earthen embankment, initially to protect against the spreading plague epidemic.

At Wiśnicz, Wilanów, the Royal Baths, Łańcut, or Mokotów, they supported private theatre groups, financed artists, funded religious buildings, and maintained their residences.

Jerzy Dominik Lubomirski (c. 1665 – 1727) gave to the Pauline Monastery at Jasna Góra many valuable objects, including the sacred vessels.

Prince Jerzy Roman Lubomirski (1799 – 1865), the owner of Rozwadów, participated in the battles of the November and January uprisings and organized hospitals for the wounded on his estates.

At these centres, young poor were prepared for adult life, being instructed for free in practical professions that could be the basis for future employment.

During the January Uprising the prince was a member of the National Government of Romuald Traugutt, where he served as a head of the Department of Internal Affairs.

He tried to regain possession of Polish art stolen by the Russians; and among others, he helped to reconstruct the Poniatowski monument standing in front of the Presidential Palace.

[33] On 7 of October 1918, after 123 years under the third partition, on the initiative of Prince Regent Zdzisław Lubomirski (1865 – 1943), Polish independence was proclaimed and published in the Monitor Polski.

They formed banking centres and credit unions, which provided cheap loans to the poorest, and were active in educational organizations, financing schools, as well as being engaged in Polish culture.

Prince Stefan was passionate about racehorse breeding, forming with his brothers the most modern horse-breeding farm in Poland at Widzów manor near Częstochowa.

During World War II, the railways built by Lubomirski delivered supplies to the occupied city and brought employees to Warsaw offices and factories.