Among the numerous men of letters patronized by James I, few held a place so close to the king during the early years of his reign as the Scottish-French Neo-Latinist John Barclay. Yet none of the biographical studies of Barclay to date have attempted to collect with any thoroughness the pertinent information regarding the author's ten years (1605-15) at the British court. It seems worthwhile then to present here such information about Barclay's period of service to the king as can be gleaned from the few records available.