Analysis of information sources in references of the Wikipedia article "Samuel Hartlib" in English language version.
More practically, Samuel Hartlib (c. 1600–1662), of English-Polish origin, but making his career in England, tirelessly promoted the idea of a "new education"..
..son of George Hartlib, a Pole, and Elizabeth Langthon...His maternal grandfather John Langthon was a wealthy English merchant..