The silver wedding anniversary of the imperial family Fredinand Keller (1842-1922 : 1809-1861)

The picture has something of this: people, group, woman, man, leader, wear, many, royalty, veil, cavalry, child, ceremony, mammal, several, opera.
Perhaps it’s a painting of a group of people standing in front of a statue with a dog in the foreground and a statue of a man in the background.