Question: The only child of a president to be born in the whitehouse?
Answer: Esther Cleveland
Disambiguated questions and answers: question: Who is the only president to have had a child born in the White House?
Who is the only child of a president born in the White House?
answer: Grover Cleveland
Esther Cleveland
Natural Questions answer: Esther Cleveland (from the Wikipedia article "List of children of the Presidents of the United States")