All around the world, Grigal (Grigal 
, Григал 
) is an extremely rare unknown gender first name. Much more frequently, Grigal is the last name as well as the forename.
Meg, Cassie, Philip, Robert, Ronald, Dennis, Daniel, Laurie, Joseph, Judith, Tamara, Thomas, Walter, Matthew, Melissa, Anthony, Charlie, Charity, Beverly, Jeffrey, Michelle, Kornelia, Steven, Patricia, Shelly, Frank, Amy, Mary, Mark, Sean, Kate, Paul, Lisa, John, Judy, Erin, Megan, Sally, Susan, Aimee, Aaron, David, Diane, Linda, Jamie, Emily, Helen, Irene, and Alexander