The Jealous Wall is a large 18th century Gothic folly made from limestone located in the Belvedere House and Gardens in Mullingar, County Westmeath, Ireland.

Robert Rochfort, 1st Earl of Belvedere, married his second wife Mary Molesworth in 1736 and lived with her and their children in their Gaulstown estate.

[2] Belvedere House was built in 1740, and around 1742 or 1743, Robert imprisoned Mary in their Gaulstown home with servants.

In c. 1743, his older brother George Rochfort built a large Palladian house next door to the south.

This article related to the geography of County Westmeath, Ireland is a stub.