Character: Lady Mary Josephine Crawley
(played by Michelle Dockery)
Lady Mary (b.1892) is the eldest daughter of the Earl and Countess of Crawley. She was destined to marry Patrick Crawley, her cousin who would eventually inherit the Abbey, but he died in the Titanic sinking in 1912. She has several suitors and one disastrous sexual affair (with Kemal Pamuk, who died the night they consummated their relationship), which haunts her and leaves her badly exposed to blackmail. At the end of the series, she is finally engaged to Matthew Crawley, the heir of Downton, and it seems she will unexpectedly fulfill her destiny to become the chatelaine of Downton after all. This expectation becomes reality with her marriage at the beginning of the third series.