The only evidence for the names of Ábrahám Pollák's parents comes from his 1905 marriage record to Cháya Ruchel Fruchter.
This marriage record says that Ábrahám was born in the month of December, 1878, and in Felsõvisó. However, there are no records of births of any children of this couple in Felsõvisó.
In the 1924 citizen book, Ábrahám is listed with an exact date of birth (December 10, 1878), again in Felsõvisó.
So it's all a little mysterious.