Both her older sisters Rosina Emmet Sherwood (1854–1948) and Lydia Field Emmet (1866–1952) would also become successful artists, as well as their first cousin Ellen Emmet "Bay" Rand (1876–1941). Emmet de Glehn's brother, William LeRoy Emmet, was an accomplished engineer employed by General Electric; a graduate of the United States Naval Academy at Annapolis, he was a pioneer in the areas of current electricity and power generation, best known for his work with steam turbines, mercury vapor, and electric ship propulsion.
In this context, both her older sisters Rosina Emmet Sherwood (1854–1948) and Lydia Field Emmet (1866–1952) would also achieve success as artists, along with their first cousin Ellen Emmet "Bay" Rand (1876–1941). Emmet de Glehn's brother, William LeRoy Emmet, was a talented engineer at General Electric; he graduated from the United States Naval Academy and made significant contributions to current electricity and power generation, particularly in his work with steam turbines, mercury vapor, and electric ship propulsion.