Explanation:

Hemchandra Barua also known as Hem Barua was a prominent writer, social reformer of Assamese of the 19th century. He hailed from Sibsagar District of Assam. His father was Muktaram Barua.

He was the compiler of the first exhaustive Assamese dictionary Hemkosh, where spellings based on Sanskrit were first introduced. It was the second dictionary of the Assamese language. It was published in 1900 after his death under the supervision of Capt. P. R. Gordon, ISC and Hemchandra Goswami.