While specific details about this particular author's version are less common in general search results compared to other commentaries, here's what is generally known about his work and its context:
In Tamil literature, the most famous and authoritative retelling of the epic is the Kamba Rāmāyaṇam (or Rāmāvatāram) composed by the poet Kambar in the 12th century.
It is common for scholars and commentators in the Tamil tradition, such as A. L. Narasimhan Iyengar, to produce their own editions, often providing: