Career
He represented Halifax County in the Nova Scotia House of Assembly from 1878 to 1879 as a Liberal-Conservative member. He was born in Halifax, the son of Robert MacDonald, an immigrant from Scotland. MacDonald was educated at Dalhousie College and was called to the Nova Scotia bar in 1872.
MacDonald was lieutenant-colonel in the militia and also served on Halifax city council.
He resigned his seat in the provincial assembly in 1879 after he was named post office inspector for Halifax.