Possible Clues:

• First name of 16th US president
• The first Jewish patriarch
• First name of 34-Across
• People's leader -- such as Lincoln?
• A poor actor receiving support in Lincoln?
• 'Amadeus' Oscar winner
• — Lincoln, president
• Biblical name thought to mean 'father of many'
• Respected leader's call ... h'm ... with ban on air travel?
• Psychologist Maslow with an eponymous 'hierarchy of needs'