Complex sentence: On Teresia's last embassy with her husband they visited Rome in 1622 where famed painter Anthony van Dyck painted their portraits, followed by Poland, and England in 1623 for the last time.
Split into simpler sentences: On Teresia's last mission with her husband they visited Rome in 1622, where Anthony van Dyck painted their portraits. They then went to Poland, and visited England in 1623 for the last time.