Lydia was born about 1671. She passed away about 1688. 
Except for OneWorldTree and sources derived from it, there is no evidence whatever that Lydia Bird was Joseph Tryon's wife. Information originally entered that this Lydia died about 1688 precludes her marrying in 1691.
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It may be possible to confirm family relationships with Lydia by comparing test results with other carriers of her ancestors' mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Lydia:
This is another one where we seem to have no evidence of their existence. The profile probably originated with TFA and looks like it went through many merges and disconnects. She does not fit with this family, is not the same person as the sibling Lydia, and unlikely there are sisters with the same name. I think she may be best disconnected from the family, last name changed to Unknown, and linked back to Joseph. We know he had a wife Lydia and have a marriage record for that so there is reason to have a profile for her. We can add notes of explanation for what is known, not known, and speculated (i.e. TFA). The death date of 1688 was entered by Kay back in 2012 and I've no idea where that came from.
I agree, Laurie, that this Lydia seems unlikely to be the wife of Joseph Tryon and that they should be disconnected and a new Lydia (Unknown) Tryon be created. The only piece of information we have for the wife of Joseph, beyond her first name, is that she is "of Glasinbury", which must be Glastonbury, and this Lydia is not. In fact her parents are of Farmington so I'm not sure how she got born in Massachusetts.
Bird-423 and Bird-21 are not ready to be merged because: Parents and siblings are the same, but dates are off and marriages do not match. Comment on Bird-21 states that records show she married both men, but neither profile gives this evidence. Let's do more research before merging these profiles.
Bird-423 and Bird-21 appear to represent the same person because: These profiles need to be evaluated. Same parents, same death dates. Marriage records seem to support both marriages. Lydia's father's will in 1708 calls her "Lydia Morgan". Joseph Tryon seems to have died after her marriage to P. Morgan. Perhaps one of these Lydias not daughter of James and Lydia Bird?