About Avraham Yacov Katzenellenbogen
R. Abraham Yacov Katzenellenbogen died in Plungian in 1863
He wrote an original manuscript of the family genealogy in Vilna in 1843. He was the Progenitor of a large family though two children, many of whom settled in South Africa.
The Unbroken Chain Neil Rosenstein (1990) Volume 1, Chapter 111, page 592 G12
(See Branch A below Katzenellenbogen Family of Plungian-Kovno-Kretinga.)