it wasn't a who , it was magna carta, a feudal document.
magna carta
Sylvain Randrianahinoro has written: 'Droit des obligations' -- subject(s): Obligations (Law)
Pablo Oro has written: 'Contracts and obligations' -- subject(s): Contracts, Obligations (Law)
Alex Weill has written: 'Droit civil, les obligations' -- subject(s): Obligations (Law)
Monica D. Fournier has written: 'Perspectives on pattern recognition' -- subject(s): Pattern recognition, Pattern recognition systems
Jac Rinkes has written: 'Contractual and non-contractual obligations in English law' -- subject(s): Contracts, Obligations (Law)
W. B. Lawrence has written: 'International obligations of the United States' -- subject(s): International obligations, Foreign relations
Giovanni E. Longo has written: 'Ricerche sull'\\' -- subject(s): Natural obligations, Natural obligations (Roman law)
L. Rosser has written: 'Recognition in heaven' -- subject(s): Heavenly recognition 'Recognition in heaven' -- subject(s): Accessible book, Heavenly recognition 'Reply to Evils of infant baptism' -- subject(s): Infant baptism
Dijon Deverell has written: 'Recognition'
Anne S. McCarthy has written: 'Recognition technologies and users' needs' -- subject(s): Optical character recognition devices, Optical character recognition device industry, Purchasing
Yes, oral or written agreements are contractual obligations.