Cites Worcester Probate 102:77 in saying that "Benjamin Marble, a minor of the age of seventeen, chose James Keys of Bolton as his guardian". So birth about 1725.
[Note: Probate file (i.e., the original documents, not recorded copies) cited below, only contains the bond, so confirms the guardianship, but the bond, unusually, does not mention the age of Benjamin and the recorded volumes are not online. However, no guardian file is found for his brother Joseph, so one would assume Joseph was just over 21 in 1742, Benjamin probably not far from it, which is generally consistent with what is asserted on this website.]
