Answer:
Ernest Hemingway had 12 grandchildren. They are Joan Hemingway, Margaux Hemingway, Mariel Hemingway, Lorian Hemingway, John Patrick Hemingway, Maria Hemingway, Brendan Hemingway, Patrick Hemingway, Sean Hemingway, Edward Hemingway, Mina Hemingway and Vanessa Hemingway.
Step-by-step explanation: