Sarah was born 20 February 1792 in New York City. Her parents were John Jay and Sarah V. Livingston. 
"Yesterday, MISS SARAH LOUISA JAY, dau. of John." 
↑Jay Family Bible. Text: Sarah Louisa Jay born in the City of New York the 20th day of February 1792
(all the above were children of John Jay and Sarah V. Livingston).
↑ Gertrude A. Barber, compiler. Deaths taken from the New York Evening Post. Volumes 1-54. n.p.: n.p., 1933-47. Ancestry.com. (New York, Death Newspaper Extracts, 1801-1890 (Barber Collection) [database on-line]. Provo, Utah: Ancestry.com Operations Inc, 2005). New York Evening Post, 23 April 1818.