The castle took its name from the Stilllorgan family, who owned property in Dalkey during the 17th century and were sometimes referred to as the Wolverston family. Though the exact details of its construction and early history remain unclear, the castle would have been a significant landmark in this coastal Dublin village for several centuries.

The castle met its end in the 1840s, not through siege or neglect, but through a rather practical form of recycling. The structure was deliberately demolished to provide building materials for Tudor House, a new construction project located behind the Roman Catholic church in Dalkey. This practice of repurposing stone from older buildings was common in 19th-century Ireland, where good quality building stone was valuable and the preservation of medieval structures wasn’t yet a priority.

Today, no visible traces of Wolverston Castle remain above ground; the site has been completely absorbed into Dalkey’s modern streetscape. The only reminders of its existence are the street name Castle Street, which preserves the memory of the fortification that once stood there, and occasional mentions in historical records. This information was compiled by researchers Geraldine Stout and Padraig Clancy, with the most recent updates to the historical record made in May 2018.