On 19th July 1947, a drowning tragedy occurred when Sister Mary Chrysostom was swept out to sea near this spot. Fred Floyd was with his son Don, and a friend who were going fishing. They were hailed down by a distressed num and Fred immediately answered the call. Although he did reach her a large wave caused him to loose hold of her. Fred eventually succumbed to the strong undertow, and his body was later washed ashore. Mary's body was found shortly after. Sister Mary Chrysostom was a nun from St John of God Subiaco
This memorial was placed by the Perth Road Board at Trigg Beach, shortly after the event close to the location where the tradedy occurred. After several decades it was eventually destoyed by the weather. The City of Stirling has recently (2018) installed a new plaque that relates this story. This was done through consultation with the Floyd family.