Factual error: The painting "Saturno devorando a su hijo" has been in the Museo del Prado (Madrid, Spain) since 1876. Plus, it can't be a sketch as the movie states, because the original painting was a mural work that was transferred to canvas after Goya's death.
Factual error: On the ecography that Jake shows to Gekko there's a note on the top left corner stating it's an 8 week baby. However, the baby seen on-screen is 4-5 months old.
Answer: Gordon did talk about his son (who was then about 3-years-old) to Bud Fox in Wall Street, but that does not mean he only had one kid. He may have had another child that wasn't mentioned. It's also possible that Gekko's wife was pregnant at the time he was indicted.
raywest ★