Tejasvin is Kidane's firstborn son, but despite this, would not inherit his fathers throne.
His line should be the true rulers of the land, but after Mjane's capture, Kidane passes his titles to the son resulting from matings with her: Keita. Tejasvin is relegated to a lesser lord, something that sours him towards the Royal family. He passes these sentiments on to his son, Oduor, who takes it a step further.
Kamaria briefly mentions him (not by name) in an angry tirade at Oduor, before he is quick to silence her treasonous words.