Who was Stanley's great grandfather robbed by in holes?

In "Holes" by Louis Sachar, Stanley Yelnats' great-grandfather, who was named Elya Yelnats, was robbed by a man named Kissin' Kate Barlow. This event is significant as it sets off a chain of misfortunes for the Yelnats family, leading to a curse that affects generations. The story intertwines their family history with the modern-day narrative of Stanley at Camp Green Lake.