The oath of a Vassal is known as an homage.The Vassal has sworn to serve another regent of a domain providing them with protection and justice.
Both clergy and vassals had to take oaths of loyalty and obedience, and were bound by law and custom to uphold those oaths.
beacause they were losers
Vassals and their lords were in a system of mutual support. The vassals owed military support, oaths of loyalty, and oats of obedience. The lords provided guarantees of land, a place to live, and military protection.
The plural of "oath" is "oaths."
Vassals were loyal to the person(s) above them. Therefore a king may have a vassal who may have other vassals loyal to him. A vassal has power over his serfs, or his vassals. Also the vassals have power over the peasents.
The plural of vassal is vassals. As in "our vassals have sent us gifts of silk".
Vassals had to serve lords because the vassals promised to serve a lord in exchange for land.
In many cases, vassals did have their own vassals, in a process called subinfeudation. There is a link below, but it does not give as much information as I would have liked to find.
The requirements vary by jurisdiction, but a Commissioner for Oaths (aka Commissioner of Oaths) is an officer appointed by the government who can administer oaths. It is similar to a notary public in the United States.
The dressing of the vassals was a tunic that had covered their leggings.
Vassals could receive more land from the lord and if they were rich enough, vassals could become a lord to other vassals. Feudalism could become confusing.
A vassal was a person who swore allegiance and homage to a lord. In exchange for this, he got property consisting of an estate or estates from which he could get income as the serfs who lived there gave him part of their crop or rent money. If the lord who did this was a king, then he would receive oaths of allegiance and homage from all the more important lords, dukes, earls or counts, and barons. He might also receive oaths from knights. The more important lords received similar oaths from lesser nobles and knights. Some of these received oaths from lesser people yet.