I hope this info helps in your research:
Marriage of Margaret and Jeremiah Lorden: 24 February 1846 in (Les-St-Anges-Gardien) Lachine, Montreal, Quebec, Canada. Jeremiah was the son of John Lorden and Julie Kalihee of County Cork, Ireland. Margaret was the daughter of John Scanlon and Mary Montgomery of County Cork, Ireland. John Montgomery was a witness at their wedding.
http://search.ancestry.ca/cgi-bin/sse.dll?rank=1&new=1&a...Son of Margaret and Jeremiah Lorden:
Name: Michael J Lordan
Event Type: Death
Event Date: 08 Nov 1940
Event Place: Detroit, Wayne, Michigan, United States
Gender: Male
Age: 81
Marital Status: Married
Birth Date: 02 Jan 1859
Birthplace: Port Hope, Ontario
Birth Year (Estimated): 1859
Father's Name: Jeremiah Lordan
Mother's Name: Margaret Scanlon
death of Jeremiah Lordan:
Name: Jeremiah Lordon
Event Type: Death
Event Date: 05 Mar 1928
Event Place: Elgin, Ontario, Canada
Gender: Male
Age: 78
Birth Date: Mar 1850
Birthplace: Quebec City Twp
Birth Year (Estimated):
Burial Date:
Burial Place:
Father's Name: Jeremiah Lordon
Mother's Name: Margaret Scanlan
Spouse's Name:
I found a John Montgomery who died on 07 July 1858 in Montreal, Quebec, Canada at the age of 62 so it would make his birth abt 1796.
I dont know if this is the William Montgomery that you are looking for: born abt 1797 in Ireland and died on 06 April 1881 in Pittsburg, Pensylvania, USA (Interred at University Cemetary) 84 years old when he died.
Lachine Canal
Work on the canal commenced on July 17, 1821 under Chief Engineer Thomas Burnett and Construction Engineer John Richardson. The original canal was 14 km. long and had seven locks, each 30 m long, 6m wide and 1.5 m deep. The Lachine Canal which was inaugurated in 1824 and opened to navigation in 1825.