 In 1472 he concluded a treaty with his brother Jan V of Nassau-Vianden-Diez in which he received the possessions West of the Rhine.Charles the Bold made him a knight in the Order of the Golden Fleece, at the age of 22, in 1473.After the death of Charles the Bold, Engelbert entered in the service of Maximilian I, Holy Roman Emperor, who had married Charles's daughter Mary of Burgundy.