ancestor
2 occurrences across the corpus
1 Enoch
1 Enoch 59:9
His name was Dendayen in the east of the garden, where the elect and the righteous will dwell; where he received _it_ from my ancestor, who was man, from Adam the first of men, whom the Lord of spirits made.
OT Pseudepigrapha
4 Maccabees 7:39
Remember that for the sake of God ye have come into the world, and have enjoyed life, and that therefore ye owe it to God to endure all pain for his sake; for whom also our father Abraham made haste to sacrifice his son Isaac, the ancestor of our nation; and Isaac, seeing his father's hand lifting the knife against him, did not shrink.