Is this who you are referring to?
Name: Thomas Dilworth E De St Dalmas
Birth: 4 Aug 1890
Death: Dec 1984 - Enfield, Middlesex, England
his father:
Alfred E. De. St. Dalmas
Ontario Deaths, 1869-1937 and Overseas Deaths, 1939-1947
birth: 3 January 1851 England
death: 16 August 1930 Toronto, York, Ontario, Canada
father: Henry St Dalmas
his sister:
Frances St Dalmas
Ontario Deaths, 1869-1937 and Overseas Deaths, 1939-1947
birth: 4 July 1894 Georgetown
death: 7 February 1929 York, Ontario, Canada
father: A E St Dalmas
mother: Magdelina Bone
in 1901 Canada
Name: E Alfred Stdalmas
Event Type: Census
Event Date: 31 Mar 1901
Event Place: K, Lincoln & Niagara, Ontario, Canada
Gender: Male
Age:
Marital Status: Married
Ethnicity: English
Nationality: Canada
Religion: Baptist
Relationship to Head of Household: Head
Birthplace: England
Birth Year (Estimated): 1851
Name: Delena Stdalmas
Event Type: Census
Event Date: 31 Mar 1901
Event Place: K, Lincoln & Niagara, Ontario, Canada
Gender: Female
Age:
Marital Status: Married
Ethnicity: Scotch
Nationality: Canada
Religion: Baptist
Relationship to Head of Household: Wife
Birthplace: Ontario
Birth Year (Estimated): 1860
Name: Dillworth Stdalmas
Event Type: Census
Event Date: 31 Mar 1901
Event Place: K, Lincoln & Niagara, Ontario, Canada
Gender: Male
Age:
Marital Status: Single
Ethnicity: English
Nationality: Canada
Religion: Baptist
Relationship to Head of Household: Son
Birthplace: Ontario
Birth Year (Estimated): 1891
Name: Frances Stdalmas
Event Type: Census
Event Date: 31 Mar 1901
Event Place: K, Lincoln & Niagara, Ontario, Canada
Gender: Female
Age:
Marital Status: Single
Ethnicity: English
Nationality: Canada
Religion: Baptist
Relationship to Head of Household: Daughter
Birthplace: Ontario
Birth Year (Estimated): 1894
in 1919, he was a soldier, intending to be a teacher ( obviously after the war) when he traveled to Quebec on the 'Minnesota'
His mother, Magdaline BONE was born 1860 in Lincoln Ontario to Thomas and Agnes BONE both born Scotland
here the births in Canada
Name: Thomas Dillworth Emerie De St. Dalmas
Event Type: Birth
Event Date: 04 Aug 1890
Event Place: Petrolia, Lambton, Ontario, Canada
Gender: Male
Father's Name: Alfred Emerie De St. Dalmas
Mother's Name: Daline Bone
Name: Magdalene Frances Emerick De St Dalmas
Event Type: Birth
Event Date: 04 Jul 1893
Event Place: Georgetown, Halton, Ontario, Canada
Gender: Female
Father's Name: Alfred Emerick De St Dalmas
Mother's Name: Magdalene Bone
Registration Year: 1893
..........................
passenger:
Name: De St Dillworth Dalmas
Gender: Male
Age: 39
Birth Date: abt 1890
Departure Date: 6 Sep 1929
Port of Departure: Southampton, England
Destination Port: Montreal, Canada
Ship Name: Montcalm
he gave his last address as 118 Dock St. NEWPORT - he was a 'Ship broker' going to Montreal, but intending to reside n England permanently
Then:
Name: Dillswrth Dalmas
Gender: Male
Age: 58
Birth Date: abt 1891
Departure Date: 26 Jul 1949
Port of Departure: Liverpool, England
Destination Port: Montreal, Canada
Ship Name: Empress Of France
Travelling with Anthony St DALMAS aged 16. Dilworth is a teacher and Anthony a student - both residing 9 Baron St, Usk, Monmouthshire
actually he sailed back and forth to Canada many times - mostly his address was Monmouthshire. He described his occupations variously as ship broker and coal exporter, teacher etc - even his mother sailed about!:
Name: Magdalena St Dalmas
Gender: Female
Age: 78
Birth Date: abt 1859
Departure Date: 9 Sep 1937
Port of Departure: Southampton, England
Destination Port: Quebec, Canada
Ship Name: Empress Of Australia
address was 35 Fields Park Ave , Newport Monmouthshire
Also, Dillworth served in WW1:
Name: Dillworth Emeric De St Dalmas
Birth Date: 4 Aug 1890
Birth Location: Petrolia, Ontario
Relative: Rev A E De St Dalmas
Relationship: Father
His occupation at that time was teacher and stenographer - he was in the Savard Park Military Hospital at time of enlistment. He was 5f 8" tall, had fair hair and complexion and had brown eyes
His father - passenger:
Name: Reverend Dalmas
Birth: abt 1866
Departure: St John, New Brunswick, Canada and Halifax, Nova Scotia, Canada
Arrival: 28 Feb 1899 - Liverpool, England
for others researching this family:
Name: Norman Henry Emeric De St Dalmas
Gender: Male
Estimated Birth Year: abt 1900
Birth Place: Leicester, England
Age: 23
Date of Arrival: 26 Jun 1923
Port of Arrival: Halifax, Nova Scotia
Ship Name: Canopic
and
Name: Louisa Emeric De St. Dalmas
Probate Date: 25 Jun 1930
Death Date: 8 Nov 1929
Death Place: Dumfries, New Brunswick, Canada
Registry: London, England
Spinster, of Crighton Royal Institution, Dumfries, New Brunswick, Admin to Francis Emeric St DALMAS, artist. Effects: 2434.17s.6p
It was an asylum for the insane...she was born 1854 London to Anthony b 1810 Guernsey & wife Harriet