Brewster/Bringhurst beaker

Hello. I am new to this site, but wanted to find further information about a silver beaker that was given to my grandfather, William Bringhurst McGehee, in 1992. According to the history given to him by his cousin Edward Bringhurst, Jr., this beaker belonged to the Reverend Elder William Brewster and is listed as being among his possessions at the time of his death, though I don't think he had a will. The beaker was passed down through Love Brewster, Deacon William Brewster, William Brewster, Elijah Brewster, William Brewster until it reached Peter Knight Brewster who had no heirs. It was then given to his sister Margaret Brewster who married Robert Bringhurst. It then was passed to Robert Bringhurst, Jr., William Bringhurst, William Rufus Bringhurst, Edward Bringhurst, and finally Edward Bringhurst, Jr. He had only daughters and they were not interested in this beaker, so he found my grandfather to be the eldest living male in the Bringhurst lineage. My Great Great Grandmother was LuLu Bringhurst Epperson. She had a duaghter named Sarah who married a McGehee and had my grandfather William Bringhurst McGehee. I can't quite figure out how far back to go to find out where Edward and LuLu shared a grandparent or Great grandparent and unfortunately, everyone who would know is dead. I do remember that it was a big deal when the Brewster beaker was given to my grandfather and it was some huge multi-family reunion of the Brewster/Bringhurst clan and their descendents. Has anyone read of this beaker in their research or have any other sources of information I could look to? Thank you for any assistance.