Canada

There does not appear to be any Irish born Cass individuals who emigrated from either Ireland or UK to Canada during the 19th century. However, a look through the various Canadian census shows quite a few Irish born Casses. Please note that as I have only included those born in Ireland , you will need to look at the actual census for more details

1851
Name DOB Birth  place District Province
Robert Cass abt 1816 Ireland Carleton County Ontario
Jane Cass abt 1822 Ireland Carleton County Ontario
Spencer Cass abt 1831 Ireland Carleton County Ontario
Edward Cass abt 1822 Ireland Stormont County Ontario
Margaret Cass abt 1824 Ireland Stormont County Ontario
John Cass abt 1845 Ireland Stormont County Ontario
Michael Cass abt 1833 Ireland  Grenville County Ontario
Catherine Cass abt 1842 Ireland  Grenville County Ontario
1861
Name DOB Birth  place District Province
Margret Cass circa 1830 Ireland Osnabruck, Stormont Ontario
Thomas Cass circa 1831 Ireland Hamilton city Ontario
Catherine Cass circa 1837 Ireland Hamilton city Ontario
Edward Cass circa 1830 Ireland Osnabruck, Stormont Ontario
Elizabeth Cass circa 1778 Ireland Prescott Ontario
James Cass circa 1840 Ireland Grenville Ontario
Benjamin Cass circa 1833 Ireland Erin, Wellington Ontario
Susan Cass circa 1838 Ireland Erin, Wellington Ontario
1871
Name DOB Birth  place District Province
Patrick Cass abt 1830 Ireland Dundas Town Ontario
Robert Cass abt 1807 Ireland Ottawa Ontario
Catherine Cass abt 1819 Ireland Ottawa Ontario
John Cass abt 1848 Ireland Ottawa Ontario
Edward Cass abt 1822 Ireland Stormont Ontario
Margaret Cass abt 1825 Ireland Stormont Ontario
Margret Cass abt 1821 Ireland Township of Cornwall Ontario
Elisabeth Cass . abt 1846 Ireland Stanstead Quebec
Sarah Cass abt 1843 Ireland Montreal West Quebec
1881
Name DOB Birth  place District Province
Margret Cass abt 1821 Dundas Ontario
Edward Cass abt 1823 Stormont Ontario
John Cass abt 1831 Middlesex East Ontario
Patric Cass abt 1831 Wentworth North Ontario
Margret Cass abt1836 Stormont Ontario
Peter Cass abt 1842 Montreal City Quebec
Helen Cass abt 1853 Montreal City Quebec
Elizabeth Cass abt 1845 Stanstead Quebec