The earliest reliable source of Árpád's life is an early 10th-century document, the "Continuation of the Chronicle by George the Monk". It narrates that the Byzantine Emperor Leo VI the Wise (r. 886–912) sent his envoy Nicetas Sclerus to the Hungarians in 894 or 895 "to give presents" and incite them against the Bulgarian Empire. Sclerus met with their two leaders, Árpád and Kurszán, at the Lower Danube. Sclerus's mission succeeded: a Hungarian army soon crossed the Danube on Byzantine ships against Bulgaria. An interpolation in Porphyrogenitus's text suggests that the invading Hungarians were under the command of Árpád's son, Liüntika.