The lodge's walls incorporate primitive carved faces, coats of arms, and date stones that once adorned a grand 17th-century mansion belonging to the Montgomery family. Though the original house has long since vanished from the landscape, these salvaged fragments offer tantalising glimpses into the artistic tastes and heraldic pride of one of Ulster's prominent planter families.

The Montgomerys were part of the wave of Scottish and English settlers who arrived in Ulster during the Plantation period, establishing themselves as significant landowners in the region. Their Convoy estate would have been a statement of wealth and power, decorated with carved stonework that proclaimed their status and lineage. When the original house was eventually demolished, someone had the foresight to preserve these carved elements, embedding them into the gate-lodge where they continue to intrigue visitors today.

These architectural fragments serve as a poignant reminder of how Ireland's built heritage has been constantly recycled and reimagined over the centuries. The practice of incorporating older carved stones into newer buildings was common throughout Ireland, whether for practical reasons, sentimental attachment, or simply to add a touch of grandeur to more modest structures. At Convoy, these weathered faces and heraldic symbols now watch over the entrance to an estate that has seen dramatic changes since those stones were first carved over three hundred years ago.