We’re Related decided to re-notify me that James A Garfield was my 7th cousin 4 times removed — previous notification had him as 6th cousin, 4 times removed.  Apparently, there was a correction to the lineage projections made and one generation was added to both of us.  In the previous notice, William Holbrook (1620-1699) was our MRCA.  He is my 9th great grandfather and the furthest documented ancestor in that lineage.  Eunice Holbrook (1658-1699) was reported as his daughter.  In the most recent reporting, Grandfather William is Eunice’s uncle and our MRCA is now Thomas Holbrook (1599-1677), the father of William and his brother John (1617-1699).  I think someone guessed at Eunice being William’s daughter back a number of months ago and in the intervening time someone else has moved her from William to John.  Interesting take on the fluidity in the Ancestry world!