When Horatio Darling was born about 1838, in Allegany, New York, United States, his father, Hercules Darling, was 37 and his mother, Catherine Tallman, was 29. He married Adell Richardson in July 1869, in Allegany, New York, United States. They were the parents of at least 3 daughters. He lived in Independence, Allegany, New York, United States in 1850 and Willing, Allegany, New York, United States for about 15 years.
English and Scottish: from Middle English derling, Old English dēorling ‘darling, beloved one’, a derivative of dēor ‘dear, beloved’ (see Dear 1). This was quite a common Old English byname, which remained current as a personal name into the 14th century. The surname probably derives at least in part from this use, probably in part also from a Middle English nickname.