Isaac de Saint-Martin

Isaac de l'Ostal de Saint-Martin (or Lostal) (c. 1629 – 14 April 1696) was a French chevalier, who came in an unknown year from the Béarn to the Dutch Republic.

In 1657 he left for Batavia, after a training in the Dutch States Army, together with Hendrik van Rheede and Johan Bax van Herentals, who was appointed as governor of the Cape Colony. Till 1672 he was stationed on Ceylon and the Dutch Malabar. He served under Admiral Rijcklof van Goens in campaigns against the Portuguese on the west coast of India. He was then appointed in Batavia because of the Franco-Dutch War.

Lostal fought against the sultans in Mataram (Java), Ternate and Bantam and seems to have been a skillful soldier. His adventures were used in a playwright by Onno Zwier van Haren. Lostal lived in Utrecht from 1683 with his comagnon Hendrik van Rheede, a naturalist.

Like Van Rheede Lostal was interested in botany and a friend of Joan Huydecoper, an Amsterdam burgomaster and one of the managers of the Dutch East India Company. In 1684 he sailed again to Batavia. During his stay at Cape of Good Hope he made a trip to the north. Together with Simon van der Stel he searched for medical or economical plants (1685). A valley north of Piketberg is named after Lostal.

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