Łęczyca in the context of "Wojciech Wiewiórowski"

Casimir I of Kuyavia (Polish: Kazimierz I kujawski; c. 1211 – 14 December 1267) was a Polish prince and a member of the House of Piast. He was Duke of Kujawy after 1233, ruler over Ląd from 1239-1261, ruler over Wyszogród after 1242, Duke of Sieradz from 1247-1261, Duke of Łęczyca after 1247, and Duke of Dobrzyń after 1248.

He was the second son of Konrad I of Masovia and his wife Agafia of Rus. He was probably named after his grandfather, Casimir II the Just.

Leszek II the Black (c. 1241 – 30 September 1288), was a Polish prince of the House of Piast, Duke of Sieradz since 1261, Duke of Łęczyca since 1267, Duke of Inowrocław in the years 1273-1278, Duke of Sandomierz and High Duke of Poland from 1279 until his death.

Łęczyca Voivodeship (Polish: Województwo łęczyckie) was a unit of administrative division and local government in Poland from the 14th century until the partitions of Poland in 1772–1795. It was part of Greater Poland Province, and its capital was in Łęczyca. The voivodeship had the area of 4,080 square kilometers, divided into three counties. Local sejmiks took place at Łęczyca. The city of Łódź, which until the 19th century was a small town, for centuries belonged to Łęczyca Voivodeship.

Łęczyca Land (Polish: ziemia łęczycka; Latin: Terra Lanciciensis) is a historical region in central Poland, a part of Łęczyca-Sieradz Land (Polish: ziemia łęczycko-sieradzka).

Its historical capital is Łęczyca, while the largest city is Łódź, while other bigger cities are Zgierz, and Tomaszów Mazowiecki (partly in Sieradz Land).

The General Sejm (Polish: Sejm walny, also translated as the General Parliament) was the parliament of the Kingdom of Poland. It had evolved from the earlier institution of Curia Regis (King's Council) and was one of the primary elements of democratic governance in the Polish dominion.

Initially established in 1386, it officially functioned as a bicameral diet since the formation of the Senate in 1493. The Sejm was composed of members of the royal council or king's court (the royal court, who played the largest role), provincial crown offices such as castellans, voivodes and higher nobility or magnates (the aristocratic element represented by the senate, upper house), members of the nobility who did not hold any crown offices and city council representatives (the democratic element represented by the lower house or chamber of deputies). These were the so-called three parliamentary states: the king, the senate and the parliamentary chamber. The Sejm was a powerful political institution, and from early 16th century, the Polish king could not pass laws without the approval of that body. The Sejm of Poland and the Seimas of the Grand Duchy of Lithuania were merged into the Sejm of the Polish–Lithuanian Commonwealth by the Union of Lublin in 1569.

Łęczyca County (Polish: powiat łęczycki) is a unit of territorial administration and local government (powiat) in Łódź Voivodeship, central Poland. It came into being on January 1, 1999, as a result of the Polish local government reforms in 1998. Its administrative seat and only town is Łęczyca, which lies 35 kilometres (22 mi) north-west of the regional capital Łódź.

The county covers an area of 774 square kilometres (298.8 sq mi). As of 2006, its total population was 53,435, out of which the population of Łęczyca was 15,423 and the rural population was 38,012.