Richard Kirwan (1733-1812) was an Irish scientist, who had a brief (no pun intended) career as a barrister, which he abandoned in favour of his scientific interests, ending up as president of the Royal Irish Academy from 1799 until his death.
Dr. James Haines McCulloh (1793-1870) was an officer in the U.S. Army, who wrote(a) a number of books on the origins of the native Americans. In the course of his work he touched on the subject of Atlantis, or as he called it Atalantis, supporting the idea of it being located in the Atlantic in the following words;
“The speculations of Ray, Whitehurst, Buffon, Kirwan, and Pennant, upon the subject of the island Atlantis, are all in favour of its former existence, and the arguments they produce from the present appearance of the Azores, Canaries, etc., are as plausible as can be expected when the great antiquity of the subject is considered. If to their considerations our few proofs be added, it may not be presumptuous to think the tradition almost well established.” .