Roman Catholic Clerical Changes, Evening News, Sydney, 13 February 1878, p 3, http://nla.gov.au/nla.news-article107944745:

The following changes have recently been made:—The Rev. H.B. Callahor has been removed from Parramatta to Balmain; [...]

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Fr T.J. Linane, From Abel to Zundolovich, Vol. 2: Biographies of Priests on the Australian Scene up to 1900, 1980, p 15:

Callachor, Hugh Bernard, OSB, B.A., Australian
First Pastor of Forest Lodge
The Callachor family, parents and children migrated from Codehill, County Cavan, Ir., in 1841. They lived in Yurong St., close to St. Mary's Cathedral, and appear to have been prominent parishioners. A brass tablet in St. Mary's honours the name of James Callachor father of Hugh Bernard, who died 16 Nov. 1885 at the age of 73. Education of the family was well provided for. Three sons were in high positions: Thomas in the Survey Department, John in the Lands Department, and Charles in the Colonial Secretary's office. A daughter, Mother Casimir, held a high trust in the Good Samaritan Order. The contention that other students of priests' lives would make is that Hugh Bernard came as a child to Sydney with his parents. Mine is that he was born in Sydney, that he studied for the priesthood in Lyndhurst and was received into the Benedictine Order. Ordination date is here claimed to be 15 Aug. 1869 (others say in 1876). His name appears on the list of baptisms performed at Sacred Heart Church, Darlinghurst, in 1873 - suggesting an earlier date of ordination than 1876. Probably his movements can be traced as follows: After being at Darlinghurst he was teaching at Lyndhurst to 1876, then Parramatta, and with Fr. George Dillon at Balmain East from 1878-1879. He was stationed at Moruya from 1879 to 1881, returning to Sydney to become first Pastor of Forest Lodge from 1881 to 1891. He is reputed to have been unfairly 'edged out' of Forest Lodge to make way for a more favoured servant. Be that as it may - Callachor and fellow Benedictines were very much 'under a cloud' especially during the Vaughan regime. Accusations made against them - especially by Wm. Duncan, newspaper editor, who was deputed by Archbishop Vaughan O.S.B. to present a Report on their doings - appear to the writer to be overdone if not unfair. Strange that an Order that had done so much for the early Australian Church should come to a rather inglorious end, - in the sense that doubts were cast on the worthiness of its members...
Callachor served at Leichardt from 1891 to 1894, and at Berrima, with Fr. W. Prendergast as assistant, from 1894 to 1896. Directories of 1897 and 1898 list him as on sick leave, and during these years he visited Ireland. He died on 16.8.1898. Burial took place in the old Petersham Cemetery, now dismantled, and probably his remains were transferred with those of other pioneer priests to Rookwood. At least his name is not on the memorial tablets to be seen at the rear of the Lewisham Church.
(Footprints, Vol. 1, No. 12)
Ref.: MDHC File, Torquay, per Father Treacy Boland, Bilgola Heights, N.S.W.