Well, "monburan" is esentially how the French "Mont Blanc" would be pronounced in Japanese. I know what you mean, though.

"Enpitsu", as far as I know, doesn't come from another language. The characters are 鉛 + 筆 (JP: en + pitsu; KR: yôn + pil; CN: yan2 + bi3), meaning "lead" and "brush", respectively.