Simplify the following text for a Grade 8 native English-speaking person.
Original: Macarthur 's eldest son , Edward Macarthur , who accompanied his parents on the Neptune and Scarborough , is believed to be the only person who sailed in the Second Fleet of whom we have a photograph as well as being the last survivor of the voyage ( see reference below ) .
Simplified: Macarthur 's eldest son , Edward Macarthur , who came with his parents on the Neptune and Scarborough , is believed to be the only person who sailed in the Second Fleet of whom we have a photograph . He was also the last survivor of the voyage .