For a while, there was a rumor that the actor who played baby Harry in movies like Harry Potter and the Sorcerer’s Stone and Harry Potter and the Chamber of Secrets also portrayed Harry and Ginny’s son, Albus Severus, in the final movie, Harry Potter and the Deathly Hallows Part 2.
Having things come full circle like this is common in the Harry Potter franchise. Author J.K. Rowling was known for paying attention to the little details, making them reappear when readers least expected them.
But while the rumor quickly swirled across the fandom, thanks to a meme shared by fans, it was later found to be false. According to IMDb, the two characters were played by entirely different actors.
In Harry Potter and the Sorcerer’s Stone, baby Harry is played by the Saunders Triplets, while Albus Severus was played by Arthur Bowen in Harry Potter and the Deathly Hallows Part 2.
Both of these child actors did not make many recurring appearances in the franchise, according to their IMDb pages.
Source : https://www.distractify.com/p/who-played-baby-harry-potter