Complex sentence: She also wrote the biographical entry for Julia Margaret Cameron in the "Dictionary of National Biography" of which her husband was the first editor (1885--1891), one of the very few biographies of women to be found in this work.
Split into simpler sentences: She also wrote the biographical entry for Julia Margaret Cameron in the "Dictionary of National Biography" of which her husband was the first editor (1885--1891). This one of the very few biographies of women to be found in this work.