Pre-Raphaelite Brotherhood was created in 1848.

Yes, Dante Gabriel Rossetti was a founding member of the Pre-Raphaelite Brotherhood along with his brother William Michael Rossetti.

The Pre-Raphaelite Brotherhood

The main trio in the Pre-Raphaelite Brotherhood were Gabriel Dante Rosetti, John Everett Millais and William Holman Hunt, although there a further 3 or 4 other members. They created the Brotherhood to oppose traditionalist thinking/teaching regarding painting, poetry and sculpture which had developed since the famous artist Raphael's time.

This is a poorly phrased question!