Just saw your beautiful Bibbins web site. I am a Cook family researcher, and am researching family member Caroline Cook, wife of Elisha Bibbins. You have the marriage in 1851. However. I have definitely located Caroline in the 1850 census as Caroline Bibbins, so think they were probably married in 1850. The census:
Woodstock, Lenawee County, MI, image 26/32 on Ancestry.
Joel Russ (indexed incorrectly as "Rugh"]
Mary Russ, 26, born NY - Mary is the sister of Caroline Cook
Caroline Bibbins, 21, born NY
Elisha is not listed, but not surprising, given he was a minister, who may have been on the road, or perhaps just another common census mistake. I have also located both of them in the 1860 and 1870 census, and Caroline in the 1880 and 1900 census(living with their son, Samuel Cook Bibbins).
It looks like your source on this branch was Charles Hilmer Bibbins. Do you have an e-mail for him, to pass this on to him, if possible?
Thanks. Diane McGowan Tichenor, Macomb, Illinois