1873 - 1949; Her parents were Thomas Hart Clay Jr. and Annie Gratz. The family lived at 94 Upland Rd. (Walley Ave. at the time), which is still standing, from approximately 1887 to 1892. In 1905, she married Dr. William Cogswell.

Miriam is the older sister of Annie who is also featured in the tintype album of Ethel Stanwood. The sisters were descendants of generations of prominent Kentucky families and a direct descendant of Henry Clay, former Speaker of the House and Senator from Kentucky. Their father was the Boston editor of The Youth's Companion, published by Edward Stanwood, father of the photo album's creator.