Complex sentence: Traditionally the three tracts have been attributed to Thomas Nashe, although there has also been speculation that Anthony Munday, like Nashe apparently active as an anti-Martinist agent, might have written them.
Split into simpler sentences: Traditionally the three tracts have been attributed to Thomas Nashe. Another possible author is Anthony Munday, who, like Nashe, was apparently active as an anti-Martinist agent, might have written them.