Born on 20 June 1935 in Kaunas.
Died 18 07 2019 in Kaunas. Buried in Jonučiai cemetery.
Professor of Vytautas Magnus University, habilitated doctorate, historian of Lithuanian literature and press. In 1942-1945 he studied at the Julinava Primary School. In 1958, he graduated from Vilnius University, where he studied Lithuanian language and literature. 1958-1967 - deputy executive secretary of the editorial board of the daily newspaper "Kauno tiesa", 1967-1971 - executive secretary, 1971-1995 - deputy editor-in-chief of the magazine "Nemunas", 1994-2006 - head of the Department of Literature at Vytautas Magnus University, and in 2002 - professor. Scientific editor of the continuing publication "Darbai ir dienos" (Works and Days) of Vytautas Magnus University from 1994-2006. Worked at Vytautas Magnus University until the end of 2013. At the end of his term of office in 2014 he was elected Professor Emeritus. In 2010, a new reading room dedicated to Lithuanian periodical archives of the second half of the 20th century was opened at VMU. Prof. L. Gudaitis donated a large collection of press collections to the University. Three years later, the professor presented a second surprise - a collection of over 1,500 books of translations of foreign authors from the first half of the 20th century into Lithuanian.