Nimura
Nimura is a surname of Japanese origin. Its meaning and precise origins can vary depending on the kanji (Chinese characters) used to write it. Surnames in Japan are often derived from geographical locations, occupations, or noble lineages. Without knowing the specific kanji used to write "Nimura," it is difficult to definitively determine its precise meaning or history.
The surname is not exceptionally common within Japan, and its prevalence may be concentrated in specific regions. Genealogical research and Japanese surname dictionaries (such as those focusing on kanji derivations) would be required to uncover a more detailed history of a specific family bearing the Nimura name.