I hope this doesn’t muddy your research waters! I am also researching the Costello families from Kitchuses, Conception Harbour since my mother was Agnes Mercedes Costello, daughter of Bob and Bridget.

” When it was decided to appoint a Sub-Collector of Customs to Woods Island in Bay of Islands, which was the center of the fishery in that area, three names for the position were put forward. Bishop McNeil recommended my father. On the 26th of September 1905, T.M. Costello received his Commission as Sub Collector at Woods Island, granted and signed by Governor, Sir Michael McGregor, Government House, St. John’s. In May 1906, the Costello family moved to Bay of Islands and took up residence at Woods Island. This position my father maintained until his 69th birthday in the year 1938. The last eleven years of his life were spent in retirement at Curling. The orphan boy of 100 years ago, became the father of seven children, one boy dying in infancy and another died another died while still in High School at the age of 15. Today 28 years after his death, three of his children are still living. The eldest of the Costello family, Martin now 82, lives in Philadelphia, a daughter, Mrs. James Furlong lives in Curling and another son Rev. C.S. Costello, Administrator of St. Anne’s Parish, Conception Hr. ”

Source: http://ngb.chebucto.org/Articles/kitchuses.shtml