In Honey and Clover the character Hagumi Hanamoto often goes by the abbreviation of her name, Hagu. I just noticed this is spelled similarly to The Hague, a city and municipality in the Netherlands. In the story, Hagu is a genius artist, and a precursory internet search shows that The Hague does have connections to art. For example, from wikipedia:
The Hague has its share of museums, most notably the Mauritshuis, located next to the Binnenhof, which exhibits many paintings by Dutch masters, such as Johannes Vermeer, Rembrandt van Rijn and Paulus Potter. Other museums include the science museum Museon, the modern art museum Kunstmuseum, the historic museum Haags Historisch Museum, the national postal museum Museum voor Communicatie, the Museum Bredius, the Louis Couperus Museum, the museum Beelden aan Zee in Scheveningen, and the Gevangenpoort, a former prison housed in a 15th-century gatehouse.
It might just be coincidence, as Hagu and Hague aren't pronounced similarly. On the other hand, checking the Japanese wikipedia page for The Hague, it seems the pronunciations are more similar in Japanese, at least (ハグ vs ハーグ). It would be interesting if the author had this connection in mind. Is there any evidence for this being a reference?