Born in Pittsburgh, Castonguay's family moved to a suburb of NYC when she was a young child. Her and her family frequented the city, exposing her to museums and the magnificent palette of humanity. By age four she realized she was an artist. When studying oil painting at age eight, she knew she would have an obligation to use her art to speak about a better world. Castonguay's family returned to Pittsburgh and she went on to earn BA, BFA, and MFA degrees in Gettysburg, Philadelphia, and Washington, D.C. She then returned to Pittsburgh where her art career and life has been dedicated to the sanctity of human diversity and preserving the biodiversity of Mother Nature. Castonguay taught Life Drawing and Painting with Carnegie Mellon University’s Pre-College Program while teaching Life Drawing for Adults at the Carnegie Museum of Art. She taught Drawing as an Adjunct under Department Co-Chairs Susan Tsu and Richard Block at CMU’s School of Drama and then went on to teach Life Drawing at the Art Institute of Pittsburgh. Her paintings about human diversity and the biodiversity of nature have been in juried art competitions and exhibitions around the US and abroad including the Westmoreland Museum of Art (AAP), Southern Alleghenies Museum of Art (Ligonier-Annual Juried), Carnegie Museum of Art (AAP), State Museum of Pennsylvania, Salmagundi Art Club (NYC), National Arts Club Gallery (NYC), Denise Bibro Fine Art Gallery (NYC), Ceres Gallery (NYC), Amarillo Museum of Art (TX), Regina A. Quick Center Museum (NY), and in numerous other galleries. Elizabeth Castonguay currently works out of studios in Pittsburgh and New York and is always visually inspired by the train ride between them. She teaches Life Drawing classes in her studio at the Highline (Pittsburgh) and on Zoom. She also leads a Zoom 2-D Sunday afternoon studio class.