"Downton Abbey": A Look Back at the Show's Best Weddings

Over the first couple seasons, the relationship between Sybil and Tom grows from a friendship rooted in common political interests to a forbidden romance. We don't actually get to see their wedding on screen, only the drama leading up to their engagement and then more drama when they return to Downton as a married couple awaiting their first child. Unfortunately, their happiness is short-lived. Medical mistakes turn the birth of their daughter, Sybbie, into a tragedy, as Sybil dies shortly after giving birth, leaving Tom a young widower with a newborn daughter.