As a child David lived with his family at 110 French St., Glasgow, UK. By the time he was aged 15, David was working as a Messanger Boy for an Ironmonger and living with his family at 61 High Street, Rutherglen Castle, Lanarkshire.
At the time of his marriage in 1920 he was residing at 37 St. Warnock St., Glasgow and worked as a Ships Painter (Journeyman). His family were textile workers.
David and his sister Mary migrated to Canada. Mary was already there, when David travelled alone to Canada for nine months in 1923 and 1924 with the intention of working as a Tool Grinder. David and his family migrated to Canada in 1927 and occasionally returned to Scotland in the years that followed. In 1927 David describes his occupation as Commercial Traveller and later in the 1950's a Knitwear Manufacturer and Salesman.
Arrival in Canada David and his family arrived Quebec Canada on 29 Apr 1929 on board the 'Athenia'. Arriving were David McMillan (37) Commercial Traveller, his wife Isabella McMillan (32) Housewife and his children Robert McMillan (8) Scholar and Isobel McMillan (2). They migrated with the intention of residing in Canada permanently, Professed the ability to read English (with the exception of Isobel) and paid their own passage to Canada. They intended to reside initially with David McMillan's Sister, Mrs Mary Gray at 308 Manning Avenue, Montreal. Their preferred contact in Scotland is Mr James McMullan [sic], Green St [copy indistinct]
Previous visit to Canada David completed a Declaration of Passenger to Canada form for his travel in 1923. He arrived on the SS Athenia which sailed on 14 Sep 1923. He was a married man whose wife did not accompany him. His then occupation was grinder and his intended occupation was Tool Grinder. He indicated he intended to remain permanently in Canada and had not lived in Canada previously. He paid his own passage and had not been refused entry previously. He was destined to reside with his sister Mary McMillan 303 Theodore Ave, Maise[indistinguisable] Montreal. His nearest relative in Scotland was his wife Isabella McMillan at 21 St Warnock St., Mill End Glasgow. He declared no disabilities or tuberculosis.
The good ship SS Athenia Interestingly, the September 1923 voyage was likely the first commercial trip for the SS Athenia. The Athenia was a steam turbine transatlantic passenger liner built in Glasgow, Scotland in 1923 for the Anchor-Donaldson Line, which later became the Donaldson Atlantic Line. She worked between the United Kingdom and the east coast of Canada until 3 September 1939, when a torpedo from the German submarine U-30 sank her in the Western Approaches.
Athenia was the first UK ship to be sunk by Germany during World War II, and the incident accounted for the Donaldson Line's greatest single loss of life at sea, with 117 civilian passengers and crew killed. The sinking was condemned as a war crime. Among those dead were 28 US citizens, leaving Germany for fear that the US might join the war on the side of the UK and France. Wartime German authorities denied that one of their vessels had sunk the ship. An admission of responsibility did not come from German authorities until 1946. 
David's son Robert returned to Scotland to study in the late 1930's. Robert married and started his family there before returning to Canada in the 1950's and finally the USA.
David and Isabella's daughter Daveen was born in 1937 in Scotland at a time when the McMillan family's permanent residence was Canada.
This pattern of travelling back and forward between Scotland and Canada continued.
On 1 Jul 1952 David Torrence McMillan departed Southampton on the 'Atlantic' heading for Quebec. He was 55 and had last stayed at 21 Blairbeth Road Burnside, Glasgow. At this time he was a Knitwear Manufacturer. 
6 months in England David and Isabella arrived in Liverpool UK aboard the 'Empress of Britain' on 4 Nov 1958 having sailed from Montreal, Quebec, Canada. Their recorded address in the UK is 9 Elm Road, Burnside Lanarkshire. David's occupation at this time was Salesman. They were travelling on their UK Scotland passports and had most recently lived permanently in Canada and intended to return after a visit of 6 months.
Details at Birth David Torrance McMillan was born on 19 January 1897 at 110 French St., Glasgow, UK He is the son of James McMillan, warper journeyman and Mary McMillan nee, Torrance who were married on 31 Dec 1888 in Glasgow.
1901 Census Details Residing at 110 French St., Glasgow. David (4) with his parents and two school age siblings, James (11) and Mary (9). Not listed as a scholar as his two siblings are. Born Lanarkshire, Glasgow.
1911 Census Details Residing at 61 High Street, Rutherglen Castle, Lanark. David (15) with his parents and unmaried siblings James (22), and Mary (20). David is listed as an employed Message Boy for an Ironmongers. Born Lanark, Glasgow.
Marriage to Isabella Mackenzie On 30 Dec 1920 David married Isabella Mackenzie at 182 Whitehall St., Glasgow, Scotland,UK after publication according to the Forms of the United Free Church of Scotland.
David Torrance McMillan, aged 23 a bachelor, was a Ships Painter Journeyman residing at 37 St. Warnock St., Glasgow. His parents were James McMillan a Textile Worker and Mary McMillan nee Torrance.
Isabella MacKenzie, aged 24 a spinster, was a lace curtain darner, residing at 37 St. Warnock St., Glasgow. Her Parents were Robert Mackenzie a pottery packer and Mary Mackenzie nee Jackson.
The officiating Minister was John Weipers and the witnesses were William Mackenzie and Jeanie Wilson.
Original biography states that: He died in 1967 in Toronto, Ontario, Canada. No evidence has been identified to support this fact. This date is repeated in the MacRitchie Family Tree on Ancestry.com again with no evidence cited. Searches on Find A Grave, Billion Graves, FamilySearch, Ancestry.ca with no result.
It is not known which of David McMillan's three children is McMillan-1. David's profile was created by that person on 12 Oct 2009. The three children died in 2013, 2016 and 2019. The compiler of the MacBride Family Tree in Ancestry.com has been approached for permission to unlock the orphaned WikiTree profile for McMillan-1 so that this duplication can be resolved. Please delete this note when resolved.
Have you taken a DNA test? If so, login to add it. If not, see our friends at Ancestry DNA.