Rav Alter Kahana of Ziditshov/Spinka, the son of Rav Yosef Meir, testified that they have a pedigree of yichus that traced back their family tree directly to the mechaber of Kuntres HaSefeikos, Rav Yaakov Yosef HaKohen, who in turn traced his lineage directly back to Eli HaKohen.
Rav Yosef Tzvi Dushinsky, the chief Rav of Yerushalayim, used to send all those who asked which Kohen to use for a Pidyon Haben to go to Rav Yosef Meir Kahana of Spinka, because he was a Kohen with a strong pedigree and reliable yichus.
Once, an elderly Jew, a bechor (firstborn), came to Rav Aharon of Belz, complaining of pain, suffering and various calamities. The Belzer Rav told him to go and redeem himself a second time, using Rav Yosef Meir Kahana as his Kohen. And so he did. From then on, he was transformed into a new person! (Otzar Pidyon HaBen, Vol I p. 87, p. 66 footnote 9)
