Embarked: 176 men
Voyage: 116 days
Surgeon's Journal: yes
Previous vessel: Princess Charlotte arrived 6 August 1827
Next vessel: Cambridge arrived 17 September 1827
Captain William Johnson
Surgeon Superintendent David Conway
The Manlius was built at Quebec in 1825.  Prisoners were transported from England to New South Wales on the Manlius in 1827 and to Van Diemen's Land in 1828 and 1830.
Departure from the Downs
The Manlius departed the Downs on 17 April 1827, the same day the Marquis of Hastings sailed from Portsmouth.
It was later reported that Mr. Cruikshanks, the Chief Officer of the Manlius, a young man much respected by the Commander and Ship's Company, met a premature death by accidental drowning on 15th May.
Surgeon David Conway
David Conway was appointed Surgeon-Superintendent to the Manlius on 22 February 1827. He kept a Medical Journal from 23 February to 24 August 1827. John McFarlane was the first patient entered in the journal. He was treated by the surgeon while the ship still lay at Woolwich on 20th March 1827.
The surgeon remarked that diarrhoea and fever were the most prevalent diseases on the voyage out. The ship experienced very bad weather in the Latitude of the Cape and from there to Sydney there were gales and heavy seas which from it breaking so frequently on board kept the ship very wet. The Prisoners, when the weather was fine, were all on deck and the greatest attention to ventilation and moving the stoves with fires about the prisons was paid and the decks were scraped dry. A great many prisoners were diseased having suffered much in the hulks. Two convicts died on the passage out - Richard Mansfold and William Wheeler. 
Arrival in Port Jackson
The Manlius arrived in Port Jackson on Saturday 11 August 1827 with 174 prisoners.
Muster Held on Board
A Muster was held on board on 15th August 1827 by Colonial Secretary Alexander McLeay. The indents include their Name, Age, Religion, Family, Marital Status, Native Place, Education, Trade, Offence, When and Where Convicted, Physical Description and to Whom Assigned on arrival. There is also information regarding deaths, colonial punishment and Pardons, so that it is revealed that James Anderson, a native of Belfast died at Moreton Bay in December 1830 and William Bedlington, a prisoner for life, died from exhaustion at the Blackheath Stockade on 12th December 1844.
The youngest convicts were Robinson Clough (15); James Cook (15); Joseph Heys (14); David Hutchinson (15); George Neale (15); George Nicoll (15); and James Willson (14). Some of these boys were sent to the Carter's Barracks.
Prisoners were landed on Friday 24th August in a healthy and creditable condition.
A considerable number of them were reported to have been assigned for Country service the same day. Henry Botting, Edward Beckseal, Thomas Betherton, James Beckett, James Bunt, Charles Currey, Thomas Cust, Thomas Emmett, Charles Flint, John Fairlie, Richard Mills, Alexander McKay, John Watts and James Tonge were all assigned to the Australian Agricultural Company where they were probably employed as shepherds and hut keepers. James Tonge was murdered by natives on 9th July 1830 while employed as a watchman on the company's land at Karuah.
Richard Birtles, George Gideon and William Jones alias Griffiths were assigned to John Galt Smith at Woodville;
Benjamin Cozier and William Dick assigned to Henry Dangar at Hunter River;
While the majority of prisoners were literate, most were engaged in manual labour and gave their employment as labourer, butcher, errand boy, cotton spinner, seaman, boat boy, farmer's man, miner, weaver etc. There were also about a dozen who had been employed as clerks. The Monitor referred to them in an editorial dated 27 August 1827 : -
It is customary now upon the arrival of a male Convict Ship, to select from among the prisoners those who are Scribes, and land them separately, from the great bulk of the Ship's Company, for the especial inspection of the Governor; the general result of which is, a transmission soon afterwards to Wellington Valley!!!! We suppose that Prisoners of this class, are deemed by the present Government, dangerous subjects for employment in the towns or settlements contiguous to the metropolis. Nine men of this description were landed from the Manlius. News of this, newly-invented punishment-a punishment, for being guilty of being able to write, ought to be transmitted 'to the poor people of England, that they may have the option at least of withdrawing their children from school.!!!
The following prisoners may have been those referred to in the above article.......
William Aldis - Compositor - Retained by government. Sent to Mr. Howe, government printer.
Matthew Frazer - Bookbinder
William Hickin - Vestry Clerk
Joseph Irving - Merchant's Clerk
George Joll - Merchant's Clerk
Robert Jelf - Merchant's Clerk
G.W. Kerridge - Attorney's Clerk
Frederick Justice Latham - Clerk - More about F.J. Latham in the Annual Register.
William Lockwood - Clerk
Richard Mills - Clerk
Edward Robinson - Copper Plate Printer
Quarter-master Benjamin Lloyd and 30 men of the 39th regiment provided the Guard on the vessel. They were landed on the Saturday afternoon of their arrival.
The Manlius was advertised to depart for Batavia on 12 September 1827.
Henry Valentine, Manlius, absconding, 50 lashes. Ditto.
William Crane, Hercules, neglect of duty, 36 lashes. Back much cut, and appeared to suffer greatly.
John M'Farlane, Manlius, absenting, 25 lashes. Back exhibited a dark appearance after 10th lash.
4). The following twenty-seven men were all tried in Scotland......
Hugh David Sinclair
5). William Andrews was born in Shoreditch London. He was convicted at the Old Bailey on 18 September 1826 and sentenced to transportation for life for highway robbery.. He married Sarah Wellard at St. Matthews Windsor and died at Millbourne Street East Maitland on 5 June 1860.
6) William Elder arrived as a convict on the Manlius. He was a native of Perthshire, married and a soldier by occupation. He was convicted of house robbery at Maidstone and sentenced to transportation for life. He was sent to the Retribution Hulk before being transferred to the Manlius. On arrival in New South Wales he was assigned to W. Panton at Stonequarry. In July 1831 he was punished for stealing a silver watch and sentenced to 150 lashes to be dealt out on three separate occasions - 50 lashes on the day of sentencing; 50 lashes on the following Saturday and 50 on the next Wednesday before being returned to his iron gang. He escaped from the iron gang and turned bushranger. He was captured by Constable John Field and natives near
Stroud in January 1832. He was sent to Sydney where he was punished with a further 75 lashes. He died at Norfolk Island in August 1835.
7). Return of Convicts of the Manlius assigned between 1st January 1832 and 31st March 1832 (Sydney Gazette 14 June 1832; 21 June 1832; 28 June 1832).....
Edward Beckinsale - Seaman assigned to George Suttor at Baulkham Hills
William Draper - Tailor assigned to William Price at Richmond
Thomas Harris - Biscuit maker assigned to George McLeay at Brownlow Hill
George Hayes - Carter assigned to George Cox at Winbourne
Enoch Hobson - Potter assigned to J.E. Manning at Sydney
Joseph Hayes - Factory boy assigned to Gidden Coleyar at Sutton Forest
William Irvine - Quarryman assigned to Henry Donnison in Sydney
James Nimmo - Farm labourer assigned to James King of Sydney (for his farm)
8). Convict ships bringing detachments of the 39th regiment included the following -
Regalia departed Dublin 16 March 1826. Lieutenant William Sacheverell Coke
ngland departed the Downs 6 May 1826. Major George Pitt D'Arcy
Sophia departed Dublin 15 September 1828 departed Dublin 15 September 1828 - Major Thomas Poole
9). National Archives - Reference: ADM 101/48/1 Description: Medical and surgical journal of His Majesty's convict ship Manlius for 23 February to 24 August 1827 by D B Conway, Surgeon, during which time the said ship was employed in the service for the conveyance of convicts to New South Wales
 Ancestry.com. UK, Royal Navy Medical Journals, 1817-1857. Medical Journal of David Conway on the voyage of the Manlius in 1827The National Archives. Kew, Richmond, Surrey.
 Bateson, Charles Library of Australian History (1983). The convict ships, 1787-1868 (Australian ed). Library of Australian History, Sydney : pp.346-347, 385