From History of Huntington County, 1887, pages 486-487
Boston H. B. Grayston, M. D., the eldest son of Dr. F. S. C. and Isabella Grayston, is a native of Brighton, England, where he was born May 12, 1850. When his parents came to America and to the city of Huntington, he was but a child, less than a year old. Here he grew up to manhood, attending the public school while it was in session. In 1869 he entered the Indiana Asbury (now De Pauw) University, in which he completed the Sophomore year. He then took a three years' course in the Chicago Medical College, and, at the same time, took a course in the Chicago School of Anatomy. He received a diploma from the latter in 1874, and graduated from the former in 1875. In 1878 he received the Ad Eundem Degree from the Ft. Wayne Medical College, and since was a student in the Post-graduate Course in Rush Medical College, Chicago, giving special attention to surgery. He is now actively engaged in the practice of the profession in Huntington and vicinity. He was married June 19, 1877, to Mary C. Slack, the youngest daughter of the late Gen. Jas. R. Slack, and three children bless the union: Wallace S., Hayden B. and Isabella A., all of whom are living. Thus far his practice has not been confined to any branch of the profession, though his preparation has especially fitted him for the practice of surgery.