Possible Clues:

• Can Ada have tea on the pitch?
• A North American lake, not a sort of South American river?
• Easternmost of a noted quintet
• Oration delivered in one of the provinces
• Ten on the road in 24 down
• Can Ada have one on the pitch with ten others?
• Canadian Great lakes province
• Can Ada have ten on the pitch?
• I rant about in spectacles on the lake
• Border lake