Eenarn or Renaren?

I had assumed that Jan Pieterszoon Renaren and Jacob Pieterszoon Eenarm were the same, that it was simply a matter of interpreting handwritten Dutch. After the note about Jan Pietersz Deught, who served the Directors of Medemblik, who was chosen as kapitein of the Sint Jeronimus on 23 April 1652, I need to reassess the situation. I also know that Hendrik de Raedt's pamphlet from late 1652 lists a Captain Jacob Pieterszoon Eenarm as captain of a Medemblik Directors' ship of 30 guns and a crew of 110 men. This pamphlet seems to have been one of the sources used in the 1652 Hollandsche Mercurius list that was republished in The First Dutch War, Vol.I. The First Dutch War, Vol.III, page 47, has a letter from Tromp, dated November 16th, 1652, saying that he had ordered the Sint Jeronimus paid off. Dr. Elias, in Schetsen uit de Geschiedenis van ons Zeewezen, Vol.IV, page 27, sayst that the crew rebelled against going to sea in the Sint Jeronimus, and that was what prompted Tromp to order the ship paid off. The ship was apparently was unseaworthy. The date seems to have been about a week earlier than that reported in The First Dutch War. Dr. Elias is silent on the captain's name.