Harry Potter Question?

So if Harry Potter is related to the Peverell's (specifically the third brother Ignotus Peverell), and Marvolo Gaunt had the Peverell ring, then the Gaunt's were also related tot the Peverells right? So if this is true...doesn't that mean Harry is technically related to Voldemort? And not only that doesn't it mean he could be the heir of Slytherin, since the Gaunts were also related to Salazar Slytherin?