Was the biological father of both Ruby Landry and her twin sister Gisselle Dumas, whom he fathered during a long illicit affair with their mother Gabrielle Landry back in the 1940's in the Louisiana Bayou. His granddaughter is Pearl Andreas as well as twin grandsons named after him: Pierre Andreas and his brother Jean: Jean Andreas. Pierre's first appearance was in Ruby as well as in the last and prequel novel Tarnished Gold, which tells the tale of Ruby's mother Gabrielle. Pierre is last seen in the second novel, Pearl in the Mist where he dies of a heart attack.