He was the eldest son of Alexander Thomas Paterson ( 1833 -- 1909 ) , President of the Montreal Telegraph Company and a director of the Bank of Montreal .
Bertha Angus , married Robert MacDougall Paterson ( 1859 -- 1922 ) , stockbroker of Montreal .
Robert MacDougall Paterson was the eldest stockbroker of Alexander Thomas Paterson ( 1833 -- 1909 ) , President of the Montreal Telegraph Company and a director of the Bank of Montreal .
Bertha Angus , married Robert MacDougall Paterson ( 1859 -- 1922 ) , stockbroker of Montreal .