Who invented the first wind turbine and why?

The earliest wind turbine was built in July 1887 by Scottish electrical engineer, Professor James Blyth in the garden of his holiday cottage in Marykirk. Blyth used the electricity it produced to charge accumulators; the stored electricity was used to power the lights in his cottage. Some months later, in the winter of 1887, American, Charles F. Brush built the first automatically operated wind turbine to power his farm in Ohio.

See:http://en.wikipedia.org/wiki/James_Blyth_%28engineer%29
He invented it so that he could save elecricity in his cottage in 1887