Complex sentence: He invited the Swiss architect Hermann Mayer and Bulgarian architect Nikola Lazarov to design the palace which was renamed "Euxinograd" in 1893 on the insistence of Princess Marie Louise, Ferdinand's first wife.
Split into simpler sentences: He invited the Swiss architect Hermann Mayer and Bulgarian architect Nikola Lazarov. The palace was renamed "Euxinograd" in 1893 on the insistence of Princess Marie Louise, Ferdinand's first wife.