Note 2 — REGIMENTAL LISTS.
Reading edition
Afterwards assumed the surname of Henderson in addition to that of Mercer. 3rd son of Lt.-col. George Mercer, by Jean, eldest dau. of Sir Robert Henderson, Bart. Served in the Pa. C.B. for Waterloo. Attained rank of Lt.-gen. and Col.-in-Chf. 68th Foot. M., 2nd Nov., 1820, Susan, 3rd dau. of Sir Wm. Rowley, Bart., and had issue. D. at Naples 21st March, 1854.