please forgive my pedantry, but this is a topic of personal interest to me. The person who codified space-time was Hermann Minkowski in an address delivered at the 80th assembly of German Natural Scientists and Physicians at Cologne on the 21st of September in 1908.

His paper, entitled "Space and Time" opens with the following paragraph

The views of space and time which I wish to lay before you before you hvae sprung from the soil of experimental physics, and therin lies their strength. They are radical. Henceforth space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind of union of the two will preserve an independant reality
Minkowski had been a teacher of Einstein and his views strongly shaped Einstein's work.