Career
He represented Annapolis County in the Nova Scotia House of Assembly from 1829 to 1836. His surname also appears as Johnstone. He was born in Kingston, Jamaica, the son of William Martin Johnston and Elizabeth Lichtenstein.
He was elected to the provincial assembly in an 1829 by-election held after Thomas Chandler Haliburton was appointed a judge.
Johnston later married Mary Kelly. Johnston died at Falmouth, Nova Scotia after taking a sea voyage on the advice of his physician.
