Macormack Easmon descended from prominent Sierra Leonean families and had numerous ancestors who distinguished themselves in the civil service and medical field.

After graduating in 1907, Macormack Easmon was awarded a scholarship to study medicine at the Medical School of St. Mary's Hospital in London.

They had one child, Charles Syrett Farrell Easmon, who became a professor in medical studies in the United Kingdom.

Easmon was also instrumental in the Monuments and Relics Commission alongside other Sierra Leoneans such as Ernest Jenner Wright and Wilmot A. Dillsworth, a Freetown city town clerk.

Easmon worked relentlessly to acquire worthy exhibits for the museum and to set up attractive displays.