who wrote the first japanese-english dictionary?

Answer 1

the American missionary and philologist James Curtis Hepburn compiled the first Japanese-English dictionary in 1885.
The Reverend Dr James Curtis Hepburn (13 March 1815–11 June 1911) was born in Milton, Pennsylvania. He attended Princeton and Pennsylvania universities and became a doctor. He decided to go to China as a medical missionary but had to stay in Singapore for a year as the Chinese ports were closed to foreigners. After five years as a missionary he returned to the United States (in 1845) and opened a medical practice in New York City.

In 1859 he decided to go to Japan as a medical missionary and it was whilst there he engaged in translating the Japanese language into the Roman alphabet. He is best remembered for the invention of the Hepburn romanization system. He was the first person to translate the entire Bible into Japanese. He published a number of Japanese–English dictionaries in the later nineteenth century.