Lawrence Parsons, 4th Earl of Rosse (November 17 1840 – August 30 1908) was the son and successor of the astronomer William Parsons, 3rd Earl of Rosse who built the "Leviathan of Parsonstown" telescope, largest of its day. His name is often given as Laurence Parsons.
Although overshadowed by his father (when astronomers speak of "Lord Rosse", it is almost always the father that they refer to), he nonetheless pursued some astronomical observations of his own, particularly of the Moon.
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