Complex sentence: Vera Chapman (1898-1996), also known as Vera Ivy May Fogerty, and within the Tolkien Society as Belladonna Took, was an author and founder of the first Tolkien Society, and also wrote a number of pseudo-historical and Arthurian books.
Split into simpler sentences: Vera Chapman (1898-1996), also known as Vera Ivy May Fogerty or, in The Tolkien Society, as Belladonna Took. She founded The Tolkien Society, and also wrote a number of pseudo-historical and Arthurian books.