I looked up Cambray onion and the majority of descriptions claim it to be baby pearl onions. A few sources say that spring onion will be a suitable sub.
Serving Size: 1 (120) g
Servings Per Recipe: 2
Calories: 249.4
Calories from Fat 179 g 72 %
Total Fat 20 g 30 %
Saturated Fat 11.8 g 59 %
Cholesterol 156.2 mg 52 %
Sodium 753.7 mg 31 %
Total Carbohydrate 6.4 g 2 %
Dietary Fiber 1.1 g 4 %
Sugars 2.3 g 9 %
Protein 12.7 g 25 %