FYI, found in: M. Cohren, compiler, "Gravestone Inscriptions of Greenwood
Cemetery. Brooklyn, Kings Co., New York" (1932):
"Gustin, Jane Elizabeth, dau. of John A. and Jane M., June 23, 1849, 3 ys.
10 ms. 8 ds."
No doubt the daughter of the John A. Gustin who m.1843 Jane M. Hardenbrook
in NYC, but I am unaware of the identity of the parents of John A. Gustin.
-= Bruce =-