Question: how are albus and credence related?
Answer: According to Grindelwald, Credence is actually the long-lost younger brother of Albus, and his name is Aurelius Dumbledore. ... After all, Dumbledore is nearly 50 in this film. (He was born in 1881, it's 1927, so he's 46.) Creedence is far younger, a good five or so years younger than Newt Scamander and crew.