354 Theophilus (surnamed the Indian) — an Arian, sent by Emperor Constantius on a mission to Arabia Felix and Abyssinia finds Christians in the Coast of Malabara as recorded by Philostorgius, an Arian Greek Church historian.
9 August 1329 Pope John XXII (in captivity in Avignon) erected Quilon as the first Diocese in the whole of Indies as suffragan to the Archdiocese of Sultany in Persia through the decree Romanus Pontifix.
December, 1647 Archbishop Garcia Appoints Fr. Jerome Furtado as Vicar General in place of the traditional Archdeacon
1652 Mar Ahatalla meets deacons Chenkayil Itty of Chengannur and Kizhakkedath Kurian of Kuravilangad at Mylapore and sends message to the Archdeacon.
3 January 1653, Archdeacon and others with 25000 soldiers goes to Cochin Port to receive Mar Ahatalla. But the Portuguese did not permit Mar Ahattalla to meet the people. Rumour spreads that Ahatalla was murdered by the Portuguese.
3 January 1653, Archdeacon and the elders take the oath Coonan Cross Oath at Mattancherry that they will no longer be under the Portuguese Jesuits.
22 May 1653 Controversial Episcopal ordination of Thomas the Archdeacon at Alangad by 12 priests of St. Thomas Christians
1659 Death of Archbishop Garcia SJ
3 December 1659 Vicariate Apostolic of Malabar (Verapoly) erected by Pope Alexander VII.
15 December 1659 Episcopal Ordination of Italian Sebastiani OCD.
17 December 1659 Bishop Sebastiani OCD takes charge as Administrator of Malabar.
24 December 1659 Bishop Sebastiani given power to ordain a Bishop in Malabar by Pope Alexander VII through the Apostolic Letter Pro Commissa Nobis.
7 January 1662 The conquest of Portuguese territories in Malabar and especially of Cochin by the Dutch and all the Catholic Missionaries including Bishop Sebastiani OCD were expelled from the territories occupied by the Dutch.
Arrival of the Protestants and further splits
1818 Arrival of the CMS Missionaries.
11 May 1831 Foundation of the first indigenous religious congreation (CMI) at Mannanam by Frs. Thomas Palackal, Thomas Porookara and Kuriakose Elias Chavara.
1833 Establishment of the Seminary at Mannanam.
24 April 1838 The Metropolitan See of Kodungalloor (Angamaly)and the See of Cochin were suppressed and territory is added to Vicariate Apostolic of Verapoly by the Brief "Multa Praeclara" of Pope Gregory XVI.
20 May 1887 Two independent Vicariates of Kottayam(present Changanaseri1) and Thrisur2 for Syrians; Charles Lavigne and Adolf Medlycott were made Vicar Apostolic respectively (Quod Jampridem, Pope Leo XIII).
14 December 1888 Foundation of Franciscan Clarist Congregation (FCC) at Changanaseri
16 September 1890 Seat of Kottayam Vicariate moved to Changanaseri.
1 April 1891 Birth of Augustine Thevarparampil (Kunjachan) at Ramapuram, Kottayam.
24 June 1892 Foundation of Sisters of the Visitation of the Blessed Virgin Mary (SVM) at Kaipuzha, Kottayam.
28 July 1896 Vicariate of Ernakulam3 created, with territories from both Vicariates of Changanaseri and Thrissur and Mar Aloysius Pazheparambil, Mar Mathew Makkil, and Mar John Menachery were made the bishops respectively (Quae Rei Sacrae, Pope Leo XIII).
8 December 1908 Foundation of Sisters of Adoration of the Blessed Sacrament (SABS) at Champakulam, Changanaseri
1 January 1911 Foundation of Sacred Heart Congregation for Women (Kerala) (SH) at Palai.
29 August 1911 Establishment of Kottayam4 Vicariate for the Knanaya (Suddists) Community of the Syrians.
14 May 1914 Foundation of the Congregation of Holy Family (CHF) at Puthenchira, Thrisur by Mariam Thressia.
29 January 1921 Foundation of Eparchial Society of the Oblates of the Sacred Heart (OSH)
21 December 1923 Establishment of the Syro-Malabar Hierarchy with Ernakulam as the Metropolitan See and Mar Augustine Kandathil as the first Head and Archbishop of the Church (Romani Pontifices, Pope Pius XI).
24 June 2009 Pope Benedict XVI declares the St. George Churuch at Angamaly a minor Basilica.
6 August 2009 Major Archbishop promulgates the Order of Celebrations on Nativity of Our Lord, Ash Day, Osana Sunday, Thursday of Pesha, Friday of Passion, Great Saturday and Great Sunday of Resurrrection
14 August 2009 Fr. John Vadakkel CMI, appointed bishop of the Eparchy of Bijnor.
23 August 2009 Union Government of India issued coins in honour of St. Alphonsa
6 September 2009 Mar Varghese Payyappilly Palakkappilly declared Servant of God.
18 January 2010 Eparchies of Mandya,28 Karnataka and Ramanathapuram,29 Tamil Nadu.
24 May 2011 Mar George Alencherry is elected as the third Major Archbishop