Possible Clues:

• Like many an heir apparent
• Man into teaching English most likely to succeed?
• Steel works accepting daughter as heir?
• Heir, at times
• Most ancient parts of Leeds crumbling with time
• Alec's position in the Baldwin family
• In position for an inheritance, maybe
• Seen you're sound and steel'd
• Child with the most responsibilities, traditionally
• Sounds as if he's an air