Gediminas (ca. 1275–1341) was Grand Duke of Lithuania from 1315 or 1316 until his death. He is credited with founding this political entity and expanding its territory which, at the time of his death, spanned the area ranging from the Baltic Sea to the Black Sea. Also seen as one of the most significant individuals in early Lithuanian history, he was responsible for both erecting the capital of Lithuania, and the establishment of a dynasty that can be traced to other European monarchies such as Poland, Hungary and Bohemia.

As part of his legacy, he obtained a reputation of being an inveterate pagan who diverted attempts in Christianizing his country to a political benefit against his enemies, after negotiations with the Pope and other Christian states.

Gediminas' normal Latin style is as follows:

Which translates as:

In his letters to the papacy in 1322 and 1323, he adds Princeps et Duke Semigallie (Prince and Duke of Semigallia). In contemporary Low German he is styled simply Koningh van Lettowen, mirroring the Latin Rex Lethowye(both "King of Lithuania"). Gediminas' right to use Latin rex, which the papacy had been claiming the right to grant from the 13th century, was controversial in some Catholic sources. So for instance he was called rex sive dux ("King or Duke") by one source; Pope John XXII, in a letter to the King of France, refers to Gediminas as "the one who calls himself rex". However, the pope did call Gediminas rex when addressing him (regem sive ducem, "king or duke").

Gediminas Gelgotas (born in June 1986 Vilnius) is a Lithuanian composer and performer and academic music.

Gelgotas was born in the family of musicians. His mother directs three choirs at Vilnius University, while his father performs with the Lithuanian National Symphony Orchestra and lectures at the Lithuanian Academy of Music and Theatre. His brother and sister are also musicians. In 1993, Gelgotas entered the M. K. Čiurlionis School of Arts, the specialty of piano. He also learned trumpet and composition, polyphony and instrumentation in a class of Nailia Galiamova. In 2004, he took the courses of mastership taught by trumpet player Leif Bengson and piano player Mūza Rubackytė.

While still a high school student, Gelgotas took part in various competitions, festivals, and musical projects. In 2001 and 2003 he became a laureate of Juozas Pakalnis competition in the wind-instrument section; in 2002 he became a laureate of the National Piano Competition. In 2003 he performed in Didysis muzikų paradas (The Great Parade of Musicians) at the National Philharmony of Lithuania, where he played as a soloist with the Symphony Orchestra of M. K. Čiurlionis School of Arts. In 2004, Gelgotas made his debut as a composer at Kūrybos pavasaris (The Spring of Creation), organized by M. K. Čiurlionis School of Arts, and became choirmaster of mixed choir Pro Musica of Vilnius University.