Ath-Dara, a mansion in Lansdowne, Philadelphia has been turned into apartments where Jane used to live. It was built in 1901 by Seymour Eaton, an author and professor at the Drexel Institute best known for his children's book The Roosevelt Bears. Seymour named the mansion to honor his wife Mary: Ath-Dara is the Gaelic for her Irish family name, Adair.