The seminary was established in 2000 by Bishop
Carlos Filipe Ximenes Belo of Dili and Bishop
Basílio do Nascimento of Baucau, who saw a need for a new seminary ahead of Timor-Leste's independence. Previously, the country had a
minor seminary,
Our Lady of Fatima Minor Seminary, but no
major seminary. During the
Portuguese colonial period, seminarians completed their studies in
Macau and
Portugal, and during the
Indonesian occupation of East Timor between 1975–1999, candidates for the
priesthood were sent to the seminaries of
Flores,
Kupang, and
Malang. Between 2006 and 2008, the seminary ordained 36 new priests. During the
2006 crisis in Timor-Leste, thousands of
internally displaced people (IDPs) took refuge at the seminary. Mostly
firaku (people from the eastern part of the country), they fled their homes in the nearby
Bairro Pite area amid attacks by
kaladi (people from the west) that peaked in May–June 2006. The seminary, which at the start of the crisis was home to 53 seminarians and six priests, From 2006 until the camp's closure, a health clinic operated at the seminary, staffed by Cuban doctors with support from the national hospital. In 2013, the
Instituto Superior de Filosofia e de Teologia (ISFIT) was established as an offshoot of the seminary, when the bishops of the
Conferência Episcopal Timorense decided to create an institute of philosophical and theological study open not only to priests, but also
laity. On 13 August 2015, the
Secretary of State of the
Holy See, Cardinal
Pietro Parolin visited the seminary to celebrate mass with the seminarians, faculty, and bishops
Norberto do Amaral and Basílio do Nascimento. On 21 September 2022, the
Substitute for General Affairs of the Vatican
Secretariat of State, Archbishop
Edgar Peña Parra, visiting the seminary with Archbishop of Dili Cardinal
Virgílio do Carmo da Silva and celebrated mass with the seminarians during his trip to Timor-Leste. The seminary's enrollment has grown from 75 in 2008 to 126 in 2010, 238 in 2022, The seminary receives candidates from Timor-Leste's three dioceses, as well as members of religious orders, including the
Carmelites and
Jesuits. The seminary's classes are conducted in
Portuguese and
Tetum. ==Rectors==