There are at least two people with the name Robert Bartlett in 17th century New England:
Robert Bartlett, born England about 1603, came on the "Anne" to Plymouth Colony. Married Mary Warren, died in 1676.
Robert Bartlett, born England between 1603 and 1611, came on the "Lion", probably with Thomas Hooker. He lived at Hartford, CT then Northampton, MA. His wife's first name seem to be Anne. He also died in 1676.
They are Bartlett-297 and Bartlett-1867. They are set as rejected merges.