Information on Phebe's marriage was obtained from a descendant, Toni (Clark) Thompson. I have made an assumption that this married belongs to this particular Phebe Remington, based on all available evidence: her age in the census records, place of marriage, and state of birth.
A family tree at Rootsweb's Worldconnect has her date of death as follows: 21 MAY 1863 in La Crosse Co., WI (source: Wagoner Tree).