Whether claim limited to causes of action specifically pleaded– breach of contract–
elements of contract– informal family arrangements– intention to create legal relations–
presumption of fact– mutual love and affection–assurance by word or conduct–
reliance– detriment– whether defendants’ action unconscionable– unjust enrichment–
restitution– receipt of benefit at claimant’s expense– whether unjust to retain benefit–
principles of equity– no agreement or promise made in writing– to what extent equity
mitigates the rigours of the law