Adam Zamenhof

Polish ophthalmologist (1888-1940).

Born June 11th, 1888 in Warsaw. [ref]

Died January 29th, 1940 at 51 years old in Palmiry.

Occupations
Esperantist, military physician, ophthalmologist, physician
Wikipedia

The highest tribute to the dead is not grief but gratitude. Thornton Wilder