The use of through-tenons is characteristic of furniture made by Eliphalet Chapin, Aaron Chapin and other cabinetmakers working in and around Hartford, Connecticut in the last quarter of the eighteenth century and first decade of the nineteenth century.
For chairs featuring similar splats, see two examples in John T. Kirk, Connecticut Furniture: Seventeenth and Eighteenth Centuries (Hartford, 1967), pp. 132-133, nos. 238 and 240; a third example, attributed to Eliphalet and Aaron Chapin and in the Mabel Brady Garvan Collection at Yale University is illustrated in Wadsworth Atheneum, The Great River: Art & Society of the Connecticut Valley, 1635-1820 (Hartford, 1985), pp. 228-229, cat. no. 109.