Possible Clues:

• Not a mother with a mother before 22 across
• First two fallers in race
• Believe people first on the scene
• Famous couple or North American orchid
• 'The gardener got the sack, along with his wife (4,3,3)'
• Matter of the Fall
• The gardener and his wife that got the sack
• First people to have faith in cockney
• Both in full fig
• Daddy and mummy