Statistics for occurrence #1 of “Senr” in chapter 8 of Lucius R. Paige, History of Cambridge, Massachusetts, 1630-1877, with a genealogical register:

...ions are accepted of and consented unto by us the present inhabitants of Shawshin; and we do humbly crave this honored Court to confirm and record the same. Your humble servants, Ralph Hill, Senr . William French John Sterne William Pattin George Farley Ralph Hill, Junr. John Croe James Parker Jonathan Danforth Henry Jeftes William Chamberlyn John Parker Robert Parker. Their reques...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Senr 4 2 0 0 0 user votes
John Swan Senr 2 0 0 0 0 user votes
Thomas Willis Senr 2 0 0 0 0 user votes
John Winthrop Senr 1 0 1 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.