Tartar

According to Ping-Cho, Noghai was a great Tartar ruler who had been at war with Kublai Khan. Barbara Wright noted that this was "Mongol fighting Mongol". (PROSE: Marco Polo)

Behind the scenes
Historically, (from a Eurocentric perspective) Tartars were people from, which covered Central, North, and East Asia. In modern times, are a wide-ranging ethnic group, ranging from Crimea to Mongolia. The term is not synonymous, or even encompassed by, "Mongol", which reasons that John Lucarotti was likely using the archaic definition when calling Noghai a Tartar in his Marco Polo novelisation.