Country News, Australasian Chronicle, Sydney, 13 December 1839, p 1, http://nla.gov.au/nla.news-article31727019:

Penrith, 9th Dec., 1839.
The Right Rev. Doctor Polding arrived here on Sunday morning. Every thing being prepared for the ceremony of laying the foundation stone of the New Church ; divine service was performed in a temporary Chapel, which was elegantly fitted up.

His Lordship addressed a numerous and respectable congregation, on the manner in which they were to prepare themselves for celebrating the approaching festival of the Nativity of our Lord.

After which the Rev. Messrs. Brady and Marum arranged the children and people, and the procession re-commenced and proceeded to the site for the New Church, adjacent to which a large tent was erected. [...]

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Australasian Catholic Directory, 1841, p 23:
Liverpool
The Rev. Richard Marum
There is one church in progress of erection in this town, 64 feet by 24, which will cost about S1500. Two chapels also are intended to be erected, one at Irishtown, and one at, or near, Denham Court; the erection of a third is also contemplated at Kemp's Creek, near the boundaries of the Penrith and Liverpool districts.
The boundaries of this mission are the Campbelltown, Penrith, Parramatta, and Sydney districts, and Botany Bay.
Mr. Marum officiates at the following stations, Holdworthy, Macquarie Fields, and Denham Court, at three different places near Kemp's Creek, two about Irishtown, one at Bull Hill, and two in the direction of Botany. There are here between 30 and 50 communicants in the month.
In Liverpool there are two schools; one conducted by Miss Smyth, the other by Mr. Hynes. Besides these, one is to be established at Irishtown, one at Botany Bay, and one at Kemp's Creek.
Branches of the Catholic Institute and of the Society for the Propagation of the Faith are established here.
The Liverpool Hospital and Gaol are visited by the reverend incumbent of the district.

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Died, Australasian Chronicle, Sydney, 8 March 1842, p 3, http://nla.gov.au/nla.news-article31735228:
On the 6th instant, at Liverpool, the Rev. R. Marum, the highly respected Catholic clergyman of that district.

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Liverpool, March 10, Australasian Chronicle, Sydney, 12 March 1842, p 3, http://nla.gov.au/nla.news-article31735282:
Seldom has it fallen to our lot to witness so painful, so truly melancholy and soul-stirring a scene as that which occurred here yesterday--the obsequies of the late Rev. Richard Marum, our dearly beloved Catholic chaplain. This much lamented young gentleman died at half-past twelve o'clock on Sunday, the 6th instant, in the 30th year of his age and fourth of his apostolic mission, after a protracted and painful illness of sixty-five days, which he bore with that Christian meekness which characterised him through life, and rendered him so deservedly esteemed and beloved by all who knew him. He retained full possession of his powerful mental faculties to the last; and until his soul was rendered into the hands of its Maker, his last moments bore happy testimony of the consolation which religion administers to the soul of the dying Christian. Yesterday, at eleven o'clock, the body was removed to the new Catholic church, a handsome well built edifice, now on the eve of its completion through the industry of the deceased, who contributed himself largely to its erection. Here a solemn high mass was offered, at which the Rev. Mr. Hogan officiated as high priest. Among the rev. gentlemen who assisted were the Very Rev. the Vicar General, the Rev. the Dean of Windsor, the Rev. Messrs. Sumner, Gould, Fitzpatrick, Coffey, Ryan, Farrelly, Grant, and Dunphy. At half-past twelve the remains were removed to their final destination, preceded by the clergymen above mentioned in surplices chanting the funeral service, and followed by his afflicted congregation, who went heavily on to let fall upon his grave the gushing tears of those who mourn their bereavement of a truly amiable and pious pastor. — Correspondent.

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Solemn High Mass, Australasian Chronicle, Sydney, 7 April 1842, p 2, http://nla.gov.au/nla.news-article31735555:
On Tuesday morning, at ten o'clock, solemn high mass and then office for the dead will be celebrated in St. Mary's Cathedral, for the soul of the late Rev. Richard Marum, of Liverpool.

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Patrick Francis Cardinal Moran, History of the Catholic Church in Australasia, 1895, p 205:

The 31st of December, 1838, witnessed the arrival in Sydney of the Vicar-General, Dr. Ullathorne, accompanied by three priests--Rev. P. B. Geoghegan, O.S.B., (subsequently Bishop of Adelaide), Rev. Richard Marum, and Rev. Thomas Butler, and three ecclesiastical students, MM. Dunphy, Magennis, and Grant. With him also came a community of the Irish Sisters of Charity, the first nuns that devoted their lives to the work of religion in Australia.
Page 229:
The Australian Church in 1841
3. Rev. Richard Marum was in charge of Liverpool, where a new church was being erected. The district extended on one side to Botany Bay, and on the other was conterminous with Penrith . About 200 assisted at Mass.