Complex sentence: One of these, a silver ingot, was stamped around the time of the last Roman emperor Honorius, a few years after another celebrated Sussex archaeologist Charles Dawson found a brick at Pevensey Fort in Sussex which was purportedly made in Honorius' time.
Split into simpler sentences: One of these, a silver ingot, was stamped around the time of the last Roman emperor Honorius. A few years later, another celebrated Sussex archaeologist Charles Dawson found a brick at Pevensey Fort in Sussex which was purportedly made in Honorius' time.