Question: Leon Plantinga is the brother of which analytic philosopher?

Context paragraphs:
Hidé Ishiguro: Hidé Ishiguro (Japanese: 石黒ひで; born c. 1935) is a Japanese analytic philosopher and emeritus professor at Keio University, Tokyo.  She is considered an expert on the philosopher Gottfried Wilhelm Leibniz on whom she has published many papers.  She is also a Wittgenstein scholar.

Two Dogmas of Empiricism: "Two Dogmas of Empiricism" is a paper by analytic philosopher Willard Van Orman Quine published in 1951.  According to City University of New York professor of philosophy Peter Godfrey-Smith, this "paper [is] sometimes regarded as the most important in all of twentieth-century philosophy".  The paper is an attack on two central aspects of the logical positivists' philosophy.  One is the analytic-synthetic distinction between analytic truths and synthetic truths, explained by Quine as truths grounded only in meanings and independent of facts, and truths grounded in facts.  The other is reductionism, the theory that each meaningful statement gets its meaning from some logical construction of terms that refers exclusively to immediate experience.

Aloysius Martinich: Aloysius Patrick Martinich (born June 28, 1946) is an American analytic philosopher and is the Roy Allison Vaughan Centennial Professor of Philosophy and Professor of History at University of Texas at Austin.  His area of interest is the nature and practice of interpretation; history of modern philosophy; the philosophy of language and religion and the history of political thought.  He is considered a foremost authority on Thomas Hobbes.

Pieranna Garavaso: Pieranna Garavaso is an analytic philosopher at the University of Minnesota Morris.  Her areas of interest include epistemological and metaphysical issues in philosophy of mathematics, philosophy of language, Ludwig Wittgenstein, Gotlob Frege, Bertrand Russell, and feminist epistemology.  She received her doctorate in philosophy from the University of Nebraska, Lincoln.  She is the recipient of two distinguished teaching awards: the University of Minnesota, Morris Alumni Association Teaching Award in 2003 and the Horace T. Morse University of Minnesota Alumni in 2004.

Leon Plantinga: Leon B. Plantinga is an American musicologist specializing in music of the later eighteenth and nineteenth centuries.  His writings have influenced scholarship on Clementi, Beethoven, and Schumann, and his textbook "Romantic Music" continues to serve as a standard textbook on nineteenth-century music in American universities.  Having served as a faculty member of the Department of Music at Yale University from 1963 to 2005, he is now a member of the emeritus faculty.  He is the brother of philosopher Alvin Plantinga and theologian Cornelius Plantinga.

Donald Davidson (philosopher): Donald Herbert Davidson (March 6, 1917 – August 30, 2003) was an American philosopher.  He served as Slusser Professor of Philosophy at the University of California, Berkeley from 1981 to 2003 after having also held teaching appointments at Stanford University, Rockefeller University, Princeton University, and the University of Chicago.  Davidson was known for his charismatic personality and the depth and difficulty of his thought.  His work exerted considerable influence in many areas of philosophy from the 1960s onward, particularly in philosophy of mind, philosophy of language, and action theory.  While Davidson was an analytic philosopher, and most of his influence lies in that tradition, his work has attracted attention in continental philosophy as well, particularly in literary theory and related areas.

Alvin Plantinga's free will defense: Alvin Plantinga's free will defense is a logical argument developed by American analytic philosopher Alvin Plantinga, the John A. O'Brien Professor of Philosophy Emeritus at the University of Notre Dame, and published in its final version in his 1977 book "God, Freedom, and Evil".  Plantinga's argument is a defense against the logical problem of evil as formulated by philosopher J. L. Mackie beginning in 1955.  Mackie's formulation of the logical problem of evil argued that three attributes of God, omniscience, omnipotence, and omnibenevolence, in orthodox Christian theism are logically incompatible with the existence of evil.  In 1982, Mackie conceded that Plantinga's defense successfully refuted his argument in "The Miracle of Theism," though he did not claim that the problem of evil had been put to rest.

Galen Strawson: Galen John Strawson (born 1952) is a British analytic philosopher and literary critic who works primarily on philosophy of mind, metaphysics (including free will, panpsychism, the mind-body problem, and the self), John Locke, David Hume, Immanuel Kant and Friedrich Nietzsche.  He has been a consultant editor at "The Times Literary Supplement" for many years, and a regular book reviewer for "The Observer", "The Sunday Times", "The Independent", the "Financial Times" and "The Guardian".  He is the son of philosopher P. F. Strawson.  He currently holds a Chair in the Department of Philosophy at the University of Texas, Austin, and taught for many years prior to that at the University of Reading, City University of New York, and Oxford University.

David Braine (philosopher): David Braine (1940 – February 17, 2017) was a British analytic philosopher with interests in analytic Philosophy of religion and Metaphysics, who sought to marry the techniques and insights of analytical philosophy and Phenomenology to the Metaphysics of classical Thomism.  His "The Reality of Time and the Existence of God" set out to prove the existence of God from the fact that the world enjoys continuity in time.  He argued that nothing in the world could be the cause of this continuity, whence God came into the picture.

Alvin Plantinga: Alvin Carl Plantinga ( ; born November 15, 1932) is an American analytic philosopher who works primarily in logic, justification, philosophy of religion, and epistemology.  From 1963 to 1982, Plantinga taught at Calvin College before accepting an appointment as the John A. O'Brien Professor of Philosophy at the University of Notre Dame.  He later returned to Calvin College to become the inaugural holder of the Jellema Chair in Philosophy.

Supporting paragraphs: Leon Plantinga Alvin Plantinga
Answer: Alvin Plantinga