The congregation of the Sisters of St. Joseph of the Archdiocese of Mombasa was founded in 1938 by Bishop John Hefferman Cssp, Vicar Apostolic of the Vicariate of Zanzibar by then, with the help of Mother Amadea Csp. The institute was named St. Joseph who was the patron of the Vicariate.

He intended that the Sisters of St. Joseph should be a religious apostolic congregation very much involved in all activities of related to the development of the local church in Kenya and especially Mombasa. Mombasa was part of the Vicariate of Zanzibar, which later developed to a diocese of its own; hence the name of the Congregation became Sisters of St. Joseph. of Mombasa.

The Sisters were to work to evangelize the people in co-operation with the Bishop and the clergy. They were to work among them in such a way that their simplicity, service and prayer life would influence the people in making the faith an inspiration of their lives and culture.

The Precious Blood Sisters trained the Sisters of St. Joseph in religious life. Sr. Rosalina, a co-founder received the first candidates at Bura Mission in Taita, which was to be, and it still is the Mother house of the Sisters of St. Joseph.

The new candidates were Mary Njeri, Theresa Nyambura, Joseph Nyambura and Martha Tatu. May they rest in peace.

These candidates were first sent to Tanzania too be trained with the sisters of Kilimanjaro after which they came back to Bura after two years. In 1938 they were received as postulants and made their first profession on 8th Dec 1941.

Since the time of founding to date, our congregation has grown tremendously; we are now 240 Professed Sisters, 12 Novices, 9 Postulants and 7 Candidates.