James Clerk Maxwell
James Clerk Maxwell FRS FRSE was a Scottish scientist in the field of mathematical physics. His most notable achievement was to formulate the classical theory of electromagnetic radiation, bringing together for the first time electricity, magnetism, and light as manifestations of the same phenomenon. Maxwells equations for electromagnetism have been called the second great unification in physics after the first one realised by Isaac Newton.
James Clerk Maxwell was born onJune 1831 atIndia Street, Edinburgh, to John Clerk, an advocate, and Frances Cay daughter of Robert Hodshon Cay and sister of John Cay. His father was a man of comfortable means of the Clerk family of Penicuik, holders of the baronetcy of Clerk of Penicuik. His fathers brother was the 6th Baronet. He had been born John Clerk, adding the surname Maxwell to his own after he inherited the Middlebie country estate near Corsock, Kirkcudbrightshire, from connections to the Maxwell family, themselves members of the peerage. James was the first cousin of the artist Jemima Blackburn and cousin of the civil engineer William Dyce Cay. They were close friends and Cay acted as his best man when Maxwell married.
Source: Wikipedia