Jurgis Matulaitis-Matulevičius (Polish: Jerzy Bolesław Matulewicz-Matulaitis; 13 April 1871 - 27 January 1927) was a Latin Church Catholic prelate who served as the Bishop of Vilnius from late 1918 until his resignation in 1925.

[1] Matulaitis was also the founder of the Sisters of the Immaculate Conception and the Handmaids of Jesus in the Eucharist; he served as the Superior-General of the Marian Fathers from 1911 until his death.

He was a noted teacher and spiritual director who set up other branches of the order in places such as Switzerland and the United States far from Russian authorities.

[4] Jurgis Matulaitis-Matulevičius was born on 13 April 1871 to the poor farmers Andrius and Uršulė as the youngest of eight children; he was baptized at the parish church (that the Marian Order managed) in Marijampolė.

In 1904 he developed a weakness in his right arm and leg that prevented him from working with his brother on the farm and which kept him from classes at the school and forced him to walk on crutches for a while.

His priest uncle from Warsaw noticed his potential and offered to take care of his nephew's high school education (1879-86) in preparation for him to begin his ecclesial studies which he began in 1891.

Matulaitis did a dissertation on the theological positions of the Russian Orthodox Church which led his instructors to believe he had a future in ecumenism efforts.

[1] Matulaitis was ordained to the priesthood on 20 November 1898 and his high academic marks led his local bishop to send him to the Fribourg college in Switzerland for doctoral work.

Matulaitis completed his doctorate in theological studies in Switzerland before returning to teach Latin and canon law to seminarians in Kielce.

He then moved on to head the new established Sociological Department in 1907 before serving as the vice-rector of the Saint Petersburg spiritual college where he began teaching dogmatics.

Pope Pius X approved a new interim constitution as the group's rule which allowed for him to take his vows in secret as a professed member of the order in 1909.

Pope John Paul II confirmed that Matulaitis had lived a model life of heroic virtue and named him as Venerable on 11 May 1982.