According to SFBay, the second tombstone belonged to 26-year-old Delia Presby Oliver, and both she and Emma Bosworth were most likely interred at Laurel Hill cemetery in the late 1800s.

However, in the early 20th century, San Francisco officials decided they wanted to free up more land within the city limits, and many cemeteries, including Laurel Hill, were closed down. The bodies were dug up and transferred to Colma, but the workers simply left the tombstones where they were. Not wanting to waste perfectly good stones, the city later repurposed the tombstones for a variety of construction projects, including the construction of a seawall on Ocean Beach.

The heavy granite was used to construct a makeshift seawall that was intended to help prevent erosion. As time went on, the wall itself eroded and some of the stones were pulled into the sea, only to wash back up again in the 21st century, leaving surprised beachgoers wondering where else these recycled tombstones might turn up.