James Franklin Fuller
James Franklin Fuller( 1835–1924) was an Irish actor, architect and novelist.
Robert Vadra
Robert Vadra is an Indian businessman, entrepreneur and the husband of Priyanka Gandhi.
He is the son -in- law of Sonia Gandhi and Rajiv Gandhi, and the brother- in- law of Rahul Gandhi.
Benjamin Franklin Perry
Benjamin Franklin Perry( November 20, 1805 December 3, 1886) was the 72nd Governor of South Carolina, appointed by U.S. President Andrew Johnson in 1865 after the end of the American Civil War.
James Franklin (philosopher)
James Franklin( born 1953 in Sydney) is an Australian philosopher, mathematician and historian of ideas.
Emily Austin Perry
Emily Austin Bryan Perry (June 22, 1795 – 1851) was an early settler of Texas and sole heir to Stephen F. Austin.
She achieved significant political, economic and social status as a woman in Texas at a time when women were often not treated equal to men.
James F. Short Jr.
James Franklin
Short Jr.( June 22, 1924 – May 13, 2018) was an American sociologist.
James Franklin Perry
James Franklin Perry (1790–1853) was an American who was an early settler and prominent citizen of Texas.
James married Emily Austin Perry, operated Peach Point Plantation, and was involved in Texas land distribution.
Robert W. Levering
Robert Woodrow Levering( October 3, 1914 – August 11, 1989) was a U.S. Representative from Ohio, son-in- law of Usher L. Burdick and brother- in- law of Quentin N. Burdick.
J. Frank Aldrich
James Franklin Aldrich( April 6, 1853 – March 8, 1933) was a United States Representative from Illinois.
James Franklin Wiley
James Franklin Wiley was a member of the Wisconsin State Senate.

Question: Who is James Franklin Perry's sibling-in-law?
Answer: Stephen F. Austin