sentences:  The first of these brick stamps were simple and included minimal information such as, the name of a person and sometimes the name of the brickyard the brick was produced in.These earliest Roman brick stamps were emblazoned into the wet clay using a hardwood or metal mold prior to the firing of the brick.As the early Roman Empire progressed fired brick became the primary building material and the number of brick producers increased dramatically as more and more wealthy land owners began to exploit clay deposits on their land for brick-making.