Newark-on-Trent or Newark is a market town and civil parish in the Newark and Sherwood district in Nottinghamshire, England. It is on the River Trent, and was historically a major inland port. The A1 road bypasses the town on the line of the ancient Great North Road. The town's origins are likely to be Roman, as it lies on a major Roman road, the …Newark-on-Trent or Newark is a market town and civil parish in the Newark and Sherwood district in Nottinghamshire, England. It is on the River Trent, and was historically a major inland port. The A1 road bypasses the town on the line of the ancient Great North Road. The town's origins are likely to be Roman, as it lies on a major Roman road, the Fosse Way. It grew up around Newark Castle, St Mary Magdalene church and later developed as a centre for the wool and cloth trades.