Compare Constellations
Information: The first column shows data points from Blackwood, Amelia, active 1880-1919, widow of H S Blackwood 5th son of Hans 3rd Baron Dufferin and Clandeboye in red. The third column shows data points from Blackwood, Amelia in blue. Any data they share in common is displayed as purple boxes in the middle "Shared" column.
