Answer
Record says for it self. History says Thomas Edison did not Invent the Light bulb at all. Instead History acknowledges that he invented the first incandescent light. The invention of Edison showed massive improvement on recent models produced that were not advisable to be used for house use.
The man Thomas Edison was the first man to invent Electrical systems that were capable of powering a light Bulb for a longer Term. Looking at it , the Light bulb was Invented in 1806 by Davy Humphrey.
Davy invented a more advanced bulb that could power a spark that will travel between two Charcoals rod.
This Powerful invention was used in residential areas, since it was bright enough. This light bulb invention also required the use of batteries and few other source of power. The work of Thomas Edison exposed the Davy's light bulb rudimentary. Actually Joseph swan also showed great attitude by contributing to the creation of the First Residential light Bulb.