Complex sentence: He wrote under many pen names, including Manzōtei and Tenjiku Rōjin, the latter an allusion to the pen name Tenjiku Rōnin used by Hiraga Gennai, to whom Chūryō was the principal literary successor.
Split into simpler sentences: He wrote under many pen names, including Manzōtei and Tenjiku Rōjin. The latter constituted an allusion to the pen name Tenjiku Rōnin, used by Hiraga Gennai, to whom Chūryō was the principal literary successor.