About Esther Rochel Halpern (Horowitz)
From The Unbroken Chain, Neil Rosenstein, 1990:
Page 1061: Rachel is the daughter of R. Elijah (A.B.D. Jolin) who was the son of R. Naftali Haim Horowitz.
Rachel married R. Yoel Halpern - a 17th generation descendant of R. Meir Katzenellenbogen.
Rachel's grandfather R. Naftali Haim Horowitz was a 16th generation descendant of R. Meir Katzenellenbogen (page 1017)