Eventually, she maintained art studios in Greenwich Village and in Passy, a fashionable Parisian neighborhood in the XVI arrondissement.
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During World War I, Gertrude Whitney dedicated a great deal of her time and money to various relief efforts, establishing and maintaining a hospital for wounded soldiers in Juilly, about 35 km northwest of Paris in France.
Whitney Houston | Vanderbilt University | Gertrude Stein | Whitney Museum of American Art | Pratt & Whitney | Cornelius Vanderbilt | Whitney | Gertrude Dunn | Vanderbilt family | Vanderbilt | Gertrude Lawrence | John Hay Whitney | William Henry Vanderbilt | Gertrude Berg | William Kissam Vanderbilt | Whitney, Nevada | Vanderbilt University Medical Center | Saint Gertrude | Mike Whitney | Gertrude | William Kissam Vanderbilt II | Gloria Vanderbilt | Gertrude Jekyll | Cornelius Vanderbilt Whitney | Caspar Whitney | William Dwight Whitney | Whitney (TV series) | Helen Hay Whitney | Gertrude Bell | Gertrude Atherton |
Her eldest son, Gottfried, 8th Prince of Hohenlohe-Langenburg, was named in an unsavory manner as part of the custody suit over Gloria Vanderbilt ("Little Gloria") between her mother Gloria Laura Mercedes Morgan (1904–1965) and the child's aunt, Gertrude Vanderbilt Whitney.