Complex sentence: In 1890 Thomas Ashby arrived to Rome as Director of "British School in Rome": he was an expert of ancient monuments topography and studied the Tusculum monuments, reporting the results in "The Roman Campagna in Classical Times" published in London in 1927.
Split into simpler sentences: In 1890 Thomas Ashby arrived to Rome as Director of the British School in Rome. He was an expert of ancient monuments topography and studied the Tusculum monuments, reporting the results in "The Roman Campagna in Classical Times" published in London in 1927.