In 1207 William Marshal, now Earl of Pembroke and his Countess Isabel, could at last turn their attention to the needs of the province of Leinster.

A town was planned on the River Barrow, which would fulfil their ambition to open the province up to new avenues of trade at an international level.

The illustrious William was in a position to acquire the services of ship-builders, merchants and bankers to develop the various aspects of the port to European standards and they swiftly ensured that the natural advantages of the area of Ros Mic Treon on the mighty river was fully exploited. Arterial waterways, the Nore and the Suir, fed into the Barrow estuary allowing water traffic to stretch from the midlands to the sea.

Bankers from prominent Italian companies set up financial centres, offering loans, facilitating exports and investing in futures, the latter largely in wool-clips. Wool was the most important single export from the hinterland of Ros. In the centre of the panel, three bankers - a Frescobaldi, a Spini, and a Riccardi preside over the port's financial affairs. The Cistercian monks carry wool packs to the ships. An Irishman awaits payment for his horse and a colleague ties on a shaggy mantle, a peculiarly Irish garment, much sought after abroad, as were Irish falcons and hunting dogs. The upper border shows imports of wine and silk. Vast quantities of wine imported from Gascony and Anjou was appreciated by Irish Chieftans, Norman Milords and monastic Abbots alike. The lower border shows Irish horses being loaded into cogs, - freight boats - for export to the armies in Europe. Up to 400 ships could be anchored in the port by the year 1230, causing concern to Waterford merchants, adversely affected by the explosion of trade in "Marshal's new town". In the corner, sheep from William's son-in-law manor from in Old Ros are being sheared.