Sentence:  ... some, hath iudged wrongfully / As in reproche, of our country / Deniyng playne, moste noble Brute / Our <WSD>antecessor</WSD> our stocke and our frute. 
Meaning of the word marked with <WSD> tags:  A person from whom one is descended.<ref>Elisha Coles, "An English Dictionary," London: Peter Parker, 1677: “"Antecessours," (...) Fore-fathers.”[http://name.umdl.umich.edu/A33754.0001.001]</ref>