This photo is of the seven sons of Thomas and Harriet Edenborough (nee Whitfield). Back row (l to r): Frank Dudley (1843-1897), Frederick (1842-1931), Clarence Marsland (1846-pre-1891), Wellesley Maxwell (1852-1897). Sitting (l to r): Edward Montague (1850-1940), Charles (1840-1897) and Melville (1855-1945).
There were also four sisters - Harriet, Rosa, Jemima and Florence but I haven't located a picture of any of them as yet.