Andrew Douglas Maclagan

He was born on 17 April 1812 in Ayr to the Scottish physician David Maclagan FRSE (1785–1865), and Jane Whiteside.

His youngest brother was the eminent accountant, David Maclagan FRSE (1824-1883) manager of the Edinburgh Life Assurance Company.

Maclagan was a close friend of toxicologist Robert Christison, and he developed an interest in toxicology and forensic medicine.

[5] Maclagan was appointed to the Chair of Medical Jurisprudence and Public Health at the University of Edinburgh in 1862, retiring in 1897.

A son, David Philip Maclagan, was a surgeon in the Royal Navy and died in Honduras in 1860, aged only 23.