What qualities of a person were especially highly valued among the feudal lords?

Among the feudal lords, the following qualities were valued:

1) Good manners, as well as education;

2) Faithful service, courage;

3) Wealth, so each feudal lord could own significant land holdings, as well as large gold reserves.

We can say that during the Middle Ages, the main goal of any feudal lord was to acquire great power and increase his own wealth. In this connection, during that period of time there were constant feudal wars.