That is why Edith suddenly outranks her sister after marrying Bertie Pelham, who suddenly became the 7th Marquess of Hexham after his cousin died. Mary is still currently only a lady, like all daughters of the nobility. ... Edith is now a marchioness, one step below a duchess and ranked above a countess.

Why is Mary jealous of Edith?

She was a editor and her own London flat and was due to become a very high lady and Mary was incredibly jealous. Her snippet of hatred to Edith was growing and you can see how much the attention was going towards Edith because all that Mary was an widow and an agent.

Is Edith older than Mary?

Julian Fellowes announced that in 1912, Mary Crawley was 21, Edith 20, and Sybil 17. Sybil was 24 when she died, making Mary 28, and Edith 27. Mary had her baby at age 29. She had herbaby at 30; George was born in 1921, making Mary 30 at the time.