Events in History Jun 7 David Thompson reaches the mouth of the Saskatchewan River in Manitoba Jun 14 Battle of Marengo (Alessandria): Bonaparte vs Austria Jun 29 Free mason lodge establishes in Alkmaar Birthdays in History Jun 1 Edward Deas Thomson, Australian politician (d. 1879) Jun 23 Karol Marcinkowski, Polish physician and social activist (d. 1846) Deaths in History Jun 7 Willem Arnold Alting, Dutch governor-general of Dutch East Indies (1780-97), dies at 75 Jun 14 Louis Charles Antoine Desaix, French military leader (b. 1768) Jun 14 Jean-Baptiste Kléber, French general, dies at 47 Jun 20 Abraham Gotthelf Kästner, German mathematician, dies at 80 1799 On This Day in History 1801