Port Harcourt has always had its attractions. It is very accessible and it is endowed with huge natural resources and it is strategically located with a potential for rapid industrial and economic growth. These reasons have led to a steady increase in the population, with non-indigenes seeking greener pastures, plying their trade and providing manpower. The result is a cosmopolitan nature for Port Harcourt and its neighbourhood.
This is one factor that has influenced positively the spread of the Catholic faith in Port Harcourt Diocese as it is today. The Port Harcourt area, being predominantly protestant, had not much visible Catholic presence. So when these "strangers" (mainly Catholic Ibos) came to town in the 50s to engage in trading and skilled labour they identified one another in their places of work, business and residence and came together to practice their faith and worship on Sundays. After some time a Catholic priest was sent for and so the Catholic Church began to take root. This is exactly the case with the Catholic Church in Rumuomasi, today known as Mater Misericordiae Catholic Church.