An oath of fealty is a pledge of allegiance of one person to another.
In medievalEurope, the swearing of fealty is an oath made by a peasant to his lord. "Fealty" also referred to the duties that a servant need to perform. These includes service and help.
↑Coredon A Dictionary of Medieval Terms and Phrases p. 120
Coredon, Christopher (2007). A Dictionary of Medieval Terms & Phrases (Reprinted.). Woodbridge: D. S. Brewer. ISBN978-1-84384-138-8.
McGurk, J. J. N. (1970). A Dictionary of Medieval Terms: For the Use of History Students. Reigate, UK: Reigate Press for St Mary's College of Education. OCLC138858.
Saul, Nigel (2000). "Feudalism". A Companion to Medieval England 1066–1485. Stroud: Tempus. pp.102–105. ISBN0-7524-2969-8.