Maartens
2 of the 7 encyclopedias on this shelf carry an entry for Maartens. Both are reproduced below, so you can see where they agree and where they differ.
Collier's New Encyclopedia (1921)
MAARTEN (real (real name, Jozua M. W. Schwartz). A Dutch novelist, born in 1858. His boyhood was spent in England, his school and university years in Germany and Holland. Later he spent much time on the Riviera and in Paris. His cosmopolitan training led him to write of Dutch life in a charming and yet objective way that did not altogether please his countrymen. He published his works in English, he although resided near Utrecht, Holland. The best known of his works are "The Greater Glory" (1894); "God's Fool" (1892); "My Lady 'Nobody" (1895); "Eve" (1912). MAAS. See MEUSE. MAÁSIN, seaport, province of Leyte, island of Visayas, Philippines, 76 miles distant from Tacloban on the S. W. Well laid out, with good streets and handsome buildings. The town has a growing trade, both import and export, hemp being its chief product. Pop. about 20,000. (2) Town in Iloilo, Pánay, Philippines, 18 miles N. W. of Iloilo. Pop. 9,700. MAASTRICHT. See MAESTRICHT.
Aiton's Encyclopedia (1910)
Maarten, marten martenz (1858-), the pseudonym of J. M. W. van der Poorten Schwartz, a Dutch novelist. He was born in Amsterdam. He spent his early life in England. He was educated in Germany for the law, but preferred literature. His first book, The Sin of Joost Avelingh, was published in 1890. It was written in English, as are his other stories, although they present for the most part Dutch characters and scenes. God's Fool is regarded as Maartens' best novel. Others are The Greater Glory, An Old Maid's Love, A Question of Taste, and My Lady Nobody.