Whom do the hebrews consider to be the father of the hebrews?

Answer 1

There are 3 patriarchs and 4 matriarchs. The first patriarch was Abraham.

The patriarchs are:

Abraham (אברהם)

Isaac (יצחק)

Jacob (יעקב)

The matriarchs are:

Sarah (שרה)

Rebecca (רבקה)

Rachel (רחל)

Leah (לאה)

Answer 2

"Hebrews" (Ivrim) actually means descendants of Eber (Ever). Ever was an ancestor of Abraham (Genesis ch.10-11) and the earliest Hebrews were Abraham's uncles and cousins for several generations back. They were among the Western Semites and lived in northern Mesopotamia, near the confluence of the Balikh and the Euphrates.
Abraham himself was called a Hebrew (Genesis ch.14) because of his wider family. Poetically, however, Abraham is called Ivri because the name also translates to "other side." Abraham was figuratively on "the other side" since he was the only monotheist (Midrash Bereshit Rabbah 42:8) until his teachings took root. His ancestors and cousins had slipped into idolatry well before his time, as is evident from Genesis 31:30, 31:53, and Joshua 24:2. For that reason, Jews do not bestow on them the honorific title of ancestors despite the genealogical connection.
However, "Hebrews" is often used to mean Abraham and his Israelite descendants, instead of his wider family. In this sense it can refer to the Jewish people. We credit Abraham as our first ancestor despite knowing exactly who came before, since it was Abraham who founded our beliefs.

http://judaism.answers.com/jewish-history/a-biography-of-abraham

Answer 3

Jews traditionally believe that Abraham is the father of the Monotheistic Hebrews. But Abraham came from a long line of Hebrews and no information is available about them.