According to Torah law if a man kidnaps a woman and has a child with her is that child now considered kidnapped as well? The question being has the man now violated the prohibition of kidnapping twice.
הגונב את בנו או את אחיו הקטן, וכן האפטרופין שגנבו את היתומים שהן סמוכין אצלם, ובעל הבית שגנב אחד מבני ביתו הסמוכין על שולחנו, ומלמד תינוקות שגנב אחד מן הקטנים הלומדים אצלו--אף על פי שנשתמש בו ומכרו, פטור: שנאמר "ונמצא בידו" (שמות כא,טז), פרט לאלו שהן מצויין בידו.
The following individuals are not liable for capital punishment: a person who kidnaps his son or a brother who is below majority, a guardian who kidnaps the orphans who are in his trust, a house-owner who kidnaps one of the members of his household, and a teacher who kidnaps one of the students studying under him.
This applies even if the kidnapper makes use of and sells the abducted person. This is derived from the exegesis of Exodus 21:16: "And he is found in his hand." This excludes those who are constantly found in their hand. (Loose translation from Chabad)