While the name James Tissot may not be as famous as fellow French artist Edgar Degas or the Dutch painter Vincent van Gogh, he was revered by them. For over a century, the Brooklyn Museum has been home to his art. The institution acquired his collection of faith paintings, “The Life of Christ,” in 1900. Last month, the museum began displaying two of the watercolors in a special exhibition to celebrate the museum’s 200th anniversary.