The town of Selby, a sizeable town on the main route north from the Midlands, is the traditional birthplace of King Henry I, fourth son of William the Conqueror, in 1068/69; the connection is supported by William and his wife Matilda's unique joint charter of Selby Abbey, far to the north of their usual circuit of activities, which was founded for Benedict of Auxerre in 1069 and subsequently supported by the de Lacy family. King Henry I is reputed to have been born there in either 1068 or 1069. A notable feature of the abbey is the 14th-century Washington Window, featuring the heraldic arms of the ancestors of George Washington, the first president of the United States. The design is often cited as an influence for the Stars and Stripes flag.