I think, to be remembered for long time it's not about the field or occupation with which a personality is associated but it depends on the quantum of fundamental shift that he/she brings in the evolution of civilizations. eg: Newton and Einstein will be remembered for the centuries to come though other brilliant physicists will not. Humanity will respect Wright brothers for many ages to come, though the case may not be same for the person who invented jet engine.

May be their original work is not in much use these days but they opened a new domains for future generations to work on and that created the shift.