MMMh - looks as though back on to the IGI again for me. (back in and out again - cannot find Duncan - means nothing as you probably know a significant % of births were not recorded)
For Alexander Benzie and Ann Munro the IGI has the following. All 'extracted'
JANE BENZIE Birth: 06 JAN 1856 Rathven, Banff, Scotland
ALEXANDER BENZIES Birth: 10 NOV 1857 Deskford, Banff, Scotland
JAMES BENZIESBirth: 11 MAR 1860 Deskford, Banff, Scotland
ISABELLA BENZIES Birth: 29 APR 1862 Deskford, Banff, Scotland
ANN BENZIES Birth: 27 JUN 1864 Deskford, Banff, Scotland
Note however, that at the same time in Rathven there is an Alexander Benzie producing children with an Isabella Black.
Regards, Steve :O)