E. Webb refers to Joseph's and Alger's relationship as similar to a "sealing."
Eliza J. Webb [Eliza Jane Churchill Webb], Letter to Mary Bond, May 4, 1876, in Biographical Collection, folder P21 f11 item 9 Myron H. Bond. P21, Community of Christ Archives
I do not know that the "sealing" commenced in Kirtland but I am perfectly satisfied that something similar commenced, and my judgment is principally formed from what Fanny Alger told me herself concerning her reasons for leaving "Sister Emma."
Mormon Polygamy Documents, JS0526. Transcript by Brian Hales and Don Bradley.