Ludolph van Keulen

He wrote a learned booke, printed at ... in 4to of the proportion of the diameter of a circle to the peripherie : before which is his picture, and round about it in the compartiment are swords and bucklers and holberts, etc., weapons : the reason wherof I understood not till Dr . John Pell gave the aforesaid account, who had it from Sir Francis Godolphin, who had been his scholar as to fencing and boarded in his house.