The Diocese of Fort Hall was renamed as Mount Kenya diocese in 1964, a few years after its erection from the Diocese of Mombasa; it was then split in 1975, into East and South; Kariuki, the last Bishop of Mount Kenya, became the first Bishop of Mount Kenya South.
Erected in 1984[11] on the division of Mount Kenya South diocese, the Central diocese was itself split in 1993 (Mount Kenya West) and in 1998 (Thika).
[16] Between the diocese's erection and Chipman's consecration, the archdeacon, Domenic Mûthoga Ndaî, was Archbishop's Commissary (acting bishop).
Thika diocese was created from portions of two dioceses — Mount Kenya South and Mount Kenya Central — on 1 July 1998.
Similarly, Murang'a South was another Mission Area of All Saints' from 2008, but originally part of Kirinyaga diocese.