Neptune Resigning To Britannia The Empire Of The Sea William Dyce (1806-1864)

The picture has something of this: Renaissance, nude, baroque, people, group, saint, cavalry, man, reclining, woman, allegory, god, shirtless, baby, veil.
Perhaps it’s a painting of a group of people in a body of water with one person reaching for the head of another person in the middle of the painting.