Ida Ten Eyck O'Keeffe (October 23, 1889 – September 27, 1961) was an American visual artist known for oil paintings, watercolors, and monotypes.[1]:6 She is the younger sister of painter Georgia O'Keeffe. Ida O'Keeffe was born in Sun Prairie, Wisconsin, on October 23, 1889. She was the third of seven children. When Ida was 13, the family moved to Williamsburg, Virginia, ...