Lieuwe (Leo) van Aitzema (19 November 1600 – 23 February 1669) was a Dutch historian, diplomat, bon viveur, libertine and spy.
In 1617 he published a volume of Latin poems under the title of Poemata Juvenilia, of which a copy is preserved in the British Museum.
[2] His most important work was the Saken van Staet in Oorlogh in ende omtrent de Vereenigte Nederlanden (14 vols.
It contains a large number of state documents, and is an invaluable authority on one of the most eventful periods of Dutch history.
[2] Four continuations of the history, by the poet and historian Lambert van den Bos, were published successively at Amsterdam in 1685, 1688, 1698 and 1699.