Joe Anders (born Joe Alfie Winslet Mendes on December 22, 2003) is an American-British actor. He co-starred with his mother Kate Winslet and with his sister Mia Threapleton in the 2022 television film I Am Ruth. Joe Anders (born Joe Alfie Winslet Mendes on December 22, 2003) is an American-British actor. He co-starred with his mother Kate Winslet and with his sister Mia Threapleton in the 2022 television film I Am Ruth.