Corstiaen Eldertszoon/Christiaan Eldertszoon/Christiaan Eldertszoon Uma

Based on what Mr. Carl Stapel has seen in A. Vreugdenhil's notes, as well as the De Sneuper website, it seems almost certain that Corstiaen Eldertszoon, Christiaan Eldertszoon, and Christiaan Eldertszoon Uma are the same man. There are several variations spellings for Eldertszoon. They include Elbertszoon, Ebelssen, and Ebelszoon. Corstiaen and Christiaan are apparently interchangable. There are a large number of examples on the Internet that show that is true. Corstiaen Eldertszoon commanded the Rotterdam ship Roskam (26 guns) in the First Anglo-Dutch War. He was apparently with Tromp's fleet on the voyage to the Shetlands (Hitland) in July-August 1652. He served through the war, and in July 1654, commanded the Gorcum. He fought in the Battle of Lowestoft in June 1665, where he commanded the frigate Utrecht (36 guns). This ship was also called the Wapen van Utrecht. In an odd move, he was dismissed from the service by the Admiralty of the Maze, but he was almost immediately hired by the Admiralty of Friesland, and commanded a Friese ship in De Ruyter's fleet in August 1665 (I believe). He served through the rest of the Second Anglo-Dutch War in the service of the Admiralty of Friesland. He was called Christiaan Eldertszoon Uma, which was apparently his full name. De Sneuper calls him Christiaan Ebelsz. Uma. He commanded the Omlandia in 1666 and fought in the Four Days Battle and the St. James's Day Battle. He commanded the Vredewold (or Zevenwolden) in the Raid on Chatham and at the Battle of Solebay in 1672.