He used his second name, Craig, as can be seen in his final, poignant letter to his diocese, in which he closed "To one and all, my wife and I say farewell in grateful remembrance of all you have been to us.
Ever your friend, CRAIG WAIAPU," adopting the traditional episcopal form of replacing his family name with that of his diocese.
This was a position he technically held twice, from 1910-1913, and then from 1914-1923, as during the war years he served as a chaplain to the first New Zealand Expeditionary Force.
He was elected Bishop of Waiapu in November 1944[7] and consecrated and enthroned (in the terminology of the day) in February 1945.
[10] Bishop Cruickshank retired to Russell and was nursed by his wife Kate (née Stephenson)[11] until her sudden death in Whanganui in December 1947.