1859   Bengal Mission was entrusted to the Belgian
Province of the Society of Jesus. On 15 November, the First batch of 5 Belgian
and two English Jesuits arrived in Calcutta, under the leadership of Fr Henri
Depelchin, SJ

1866   Jesuit Balasore Mission from the Bengal Mission.

1868   On 24 November Fr Augustus Stockman, SJ from Midnapore arrives at Chaibasa by bullock cart to study the prospects of starting mission
work among the Adivasis of Chotanagpur. (He returns to Midnapur on 10 December).

1869   10 July 1869 he was assigned to start a parish in Chaibasa. St Xavier’s, Chaibasa comes into existence (but closed between
1909-32).Bengal Mission was entrusted to the Belgian Province of the Society of Jesus. On 15 November, the First
batch of 5 Belgian and two English Jesuits arrived in Calcutta, under the leadership of Fr Henri Depelchin, SJ

1869   The property of the present Divya Bharati, Chaibasa, purchased.

1873   Fr C. Hogger in Chaibasa assisting Fr Stockman since the latter was ill.

1873  Bishop Steins baptized the First Adivasi Catholics of Chotanagpur (28 from 8 families – 4 were little children) in Khuntpani village near Chaibasa. He also blessed 6 marriages.

1873   Mission Station opened at Asansol.

1874   3 May: two Daughters of the Cross (FC) arrived in Chaibasa, and Fr Stockman ceded the house he built in 1871 to the sisters.

1874   All the newly baptized Munda tribals moved up to Burudi-Kochang in Ranchi District. The sisters of the Daughters of the Cross (FC) too left.

1875   1 March: Fr C Hogger takes the place of Fr Stockman in Chaibasa and the latter moved to Burudi to supervise the building work there.

1879   Jesuit Khrisnachandrapur Mission (often in later years one priest looked after both of these)

1882   Bandgaon Mission of Singhbhum District started (but closed between 1895-1949)

1886   Establishment of the Latin Catholic Hierarchy in India. The Apostolic Vicariate of Bengal, comprising the actual Ranchi, Hazaribagh and Palamau districts, is erected by Decree of Pope Leo XIII into the Archdiocese of Calcutta. Calcutta becomes an Archdiocese.

1891   Chakradharpur Mission (no resident priest 1902-1951)

1908   Chotanagpur Tenancy Act

1908   Fr Aemelius Van Severen left Torpa to arrive in Kesramal, Gangpur state on 13 May 908. He toured the villages but did not stay in Kesramal for long. No permanent priest in Kesramal yet.

1909  Fr. Edward Alary, SJ arrived at Kesramal on 1 February 1909. The two Jesuits take care of the Gangpur Mission. Fr. Sylvain
Grosjean, SJ (considered the Founder of the Gangpur Mission) arrived at Kesramal on 26 November 1909. 

1911   Adra Mission, but only in 1918 Fr Emile Courtin settled as the first resident Parish Priest.

1915   September 6: Fr. Sylvan Grosjean died at Kesramal, Gangpur Mission, Odisha.

1918   7 acres land was bought at Hamirpur, Rourkela, Odisha for the Catholic Church

1918   St. Antony’s, Dhanbad

1919   St. Mary’s, Bistupur, Jamshedpur

1922    Catholic Church, Gaibira, Gangpur Mission, Odisha

1925    Jhunmur Chruch, near Birmitrapur in Gangpur mission

1927   By decree of the Holy See, 25 May 1927, the Archdiocese of Calcutta is divided. Ranchi becomes a new diocese with Fr. Louis
Van Hoeck, SJ as the new bishop (1928). The Jesuit Bengal Mission remained undivided but was called henceforth the Calcutta-Ranchi Mission.

1929   Catholic Church, Kusumdegi, Gangpur Mission, Orissa.

1934   Parish Priest of Chaibasa given charge of mines area in Keonjhar.

1934   Anandpur Mission

1935   Bengal Mission divided into ‘Calcutta Mission” and “Ranchi Mission”

1935   By Decree of the General, VRF. Wlodomir Ledochowkshi of 21 April 1935 and coming into effect on 08 May 1935 the Belgian
Province divided into the North and south Belgian Province (PBS and PBM) and consequently the Calcutta-Ranchi mission is also divided into the Calcutta (PBM) and the Ranchi mission (PBS). The mission territories coincide with the respective dioceses. 

1947   New Jamshedpur Mission carved out of Calcutta Mission and Ranchi Mission was assigned to Maryland Province (General’s letter
16 January 1947)

1947    Loyola School, Jamshedpur started by Frs Cecil Leeming and Robert Drugman of St Mary’s  parish (Both Calcutta Jesuits)

1948   By a decree dated 2 February 1948, Rev Fr JB Janssens, erected the independent Jamshedpur mission on 12 March. A part of Singhbhum district belonging to the Ranchi Mission is ceded to the Maryland Jesuits who with other territories, found the Jamshedpur Mission. Part of Singhbhum, however remained part of the Ranchi Diocese

1948   The Orissa region (Gangpur) of the Ranchi Mission is ceded to the S.V.D. Fathers. It became, with other territories, the Diocese of Sambalpur, by Decree of the Holy see of 14 June 1951

1949   XLRI, Jamshedpur

1949    Gomoh property, Britto House, for Hindi language school bought