Abuna Thaddaeus was born in Ethiopia in the Province of Wollo. He attended the traditional Church school where young boys between the ages of five and seven years are normally sent to pursue their studies at the request of their parents and according to their ability.

At the age of fourteen (14) years, he became a Deacon. On seeing that he was in the lineage of the clergy, he decided to attain higher education, which, at that time, was only obtained traditionally in Cathedrals and Monasteries.

After working with Monks in the Monasteries, he chose monastic life at an early age. In 1958 he became a Monk and Priest and served in Tigre Province at Keratsa Mariam Monastery for six (6) years. He then moved to Shoa Province at Managesha Amba Mariam Mariam Monastery for four (4) years.

The type of education he attained was Zema (traditional and liturgical music), Tuguame Metshaf (commentary on the Bible especially the New Testament, and Kenye (poetry). As his ambition was to obtain a more modern education and so extend his knowledge both at home and abroad, he moved to the Holy Trinity Cathedral, Addis Ababa, where he worked and studied for four (4) years.

After this, he was sent by the Church to do voluntary and charitable missionary work in Trinidad and Tobago. He arrived in Trinidad on October 22nd, 1972 and has been in the service of the people of Trinidad, and more recently, the people of the Caribbean and Latin America since that date.

In February 1993, he was summoned to Ethiopia by the Holy Synod (The Administrative body of the Church) to be consecrated as 'Bishop' on February 7th, 1993 and took the name of Thaddaeus. He was then appointed Bishop of the Caribbean and America to continue serving the nations and defending the Faith of the Ethiopian Orthodox Church.

In the region. On February 8th, 1995 he was elevated to the position of 'Archbishop' and is active in the service of the people of the Caribbean and Latin America.