Complex sentence: The Reverend Wladislaw Somerville Lach-Szyrma, M.A., F.R.H.S. (25 December 1841--25 June 1915) was an English curate, historian and science fiction writer who is credited as the first writer to use the word "Martian" as a noun.
Split into simpler sentences: The Reverend Wladislaw Somerville Lach-Szyrma, M.A., F.R.H.S. (25 December 1841--25 June 1915) was an English curate, historian and science fiction writer. He is credited as the first science fiction writer to use the word "Martian" as a noun.