One of the most basic, yet remarkable, facts about Williams is that she's just a year younger than Sophie Turner, the actress who plays Sansa Stark. The pair were intended to have a small age gap, with Sansa the elder daughter of the two. However, the height difference makes the gap seem a lot wider than it really is. Williams was born in April 1997, while Turner was born in February 1996. The latter is currently 5ft 9in, while Williams is just a fraction above 5ft. While the pair are quarrelling sisters in the show, Williams and Turner are best friends away from set, frequently being spotted together.