Ronald Macdonald b. 1768 Scotland d. 1852 St. Polycarpe
Spouse: Mary McDonald b.1781 d. 1856

Son: Ronald Joeseph Mcdonald b. abt.1869 District Number 189 Soulanges, St. Polycarpe d.1939 Spouse: Anne Mcdonald b. abt.1834 in Scotland. died 1914. 1871 Cencus

Wedding of Ronald/Ranald and Anne/Ann (different spellings)
FamilySearch.org "Canada Marriages, 1661-1949", Alexander Mcdonald in entry for Ranold Mcdonald and Anne Mcdonald (1866.) Alexander is Annes father.

Marriage date: 05 Nov 1866
Saint Francis Xavier, Brockville, Ontario, Canada
Groom's Father: Ranold Mcdonald
Grooms's Mother: Mary Mcdonald
Bride's Father: Alexander Mcdonald
Brides's Mother: Margaret Scott
Indesing Porject(batch) number 102288-3
System Origin: Canada-EASy
Source Film Number: 1301767
Reference Number: 8

I am related to Anne daughter of Alexander MacDonald and Margaret Scott. Last name gradually became McDonald