What is Good Consideration?

Legal Definition
A reason for doing something based on natural affection, generosity, love, or moral duty. This reason is insufficient to judge a commercial contract or promise enforceable as it lacks valid, valuable, and legal basis for the reason. Also refer to valuable consideration.
Legal Definition
Contracts. A good consideration is one which flows from kindred or natural love and affection alone, and is not of a pecuniary.nature. Vin. Ab. Consideration, B; 1 Bouv. Inst. n. 613. Vide Consideration.
-- Bouviers Law Dictionary
Legal Definition
As distinguished from valuable consideration, a consideration founded on motives of generosity, prudence, and natural duty; such as natural love and affection. Potter v. Grade, 58 Ala. 307, 29 Am. Ren. 748; Groves v. Groves, 65 Ohio St. 442, 62 N. E. 1044; Jackson v. Alexander, 3 Johns. (N. Y.) 484, 3 Am. Dec. 517.
-- Black's Law Dictionary
Legal Definition
Natural love and affection; any valid consideration other than a valuable one.
-- Ballentine's Law Dictionary