Did more than one person claim to be the inventor of the light bulb?

Yes, multiple inventors claimed to have developed versions of the light bulb. Thomas Edison is often credited with its invention due to his successful commercial development and patent in 1879, but others, such as Sir Humphry Davy and Joseph Swan, made significant contributions to the concept and technology of electric lighting prior to Edison's work. Swan even partnered with Edison in the UK after both had independently created functioning light bulbs.