View gallery Image Credit: Getty Images Alec Baldwin may be a huge star in film, television and comedy, but he isn't the only member of his family to venture into Hollywood. The actor is the eldest son of Carol M. Baldwin and Alexander Rae Baldwin Jr. Alec has three brothers - Daniel Baldwin, William Baldwin and Stephen Baldwin - and two sisters - Elizabeth Keuchler and Jane Sasso. The four brothers, known as the "Baldwin Brothers," have all pursued careers in acting. Learn more about Alec's three brothers below. Daniel Baldwin Daniel Baldwin is the second-oldest Baldwin son, after Alec.