Caroline Healey was born in Boston on June 22, 1822, and became vice principal of a women's school in Washington, D. C., in 1840. She was a feminist writer and journal editor, and ran a private school out of her home in her later years. Healey married Reverend Charles Henry Appleton Dall (1816-1886) in September 1844, and they had at least two children, William Healey and Sarah Keene ("Sadie"). Minister Charles H.A. Dall became the first Unitarian missionary in India, where he lived from 1855 until his death in 1886; his family remained in the United States. Sarah Keene Dall, born in September 1849, married Josiah Munro around 1870 or 1871. They moved to Buffalo, New York, in the mid-1870s, where he worked as the manager of the branch office of Oriental Powder Mills. Sarah and Josiah Munro had two sons, Willis and Charles.
William Healy Dall was born in Boston on August 21, 1845. He studied medicine and anatomy at Harvard until he volunteered to help restore order during the Boston draft riots of 1863. Between 1863 and 1869 he assisted in geological surveys around Lake Superior and in Alaska. In 1870, he moved to Alaska, where he worked as a geologist and paleontologist. He moved back to the east coast around 1885, and became an honorary curator of the Smithsonian Museum and a professor at the Wagner Free Institute of Science in Philadelphia. He married Annette "Nettie" Whitney on March 3, 1880, and they had four children: Charles, Marion, Marcus, and William. William Healey Dall died on March 27, 1927.