Sentence:  It was a mirror now, / And in it a long perspective I could trace / Of my <WSD>begetters</WSD>, dwindling backward each past each / All with the family look, / Whose names had since been inked down in their place / On the recorder's book, / Generation and generation of my mien, and build, and brow. 
Meaning of the word marked with <WSD> tags:  A procreator; one who begets.