Starting Sept. 30, 2014, Genealogy.com will be making a big change. GenForum
message boards, Family Tree Maker homepages, and the most popular articles
will be preserved in a read-only format, while several other features will
no longer be available, including member subscriptions and the Shop.
It should be noted that as far as I have seen, there is no concrete proof -- other than the similarity of name -- that these are the same Robert Seabrooks.
Note that LDS records also show a Robert Seabrook christened on 16 Jan 1564 Chislet, Kent, England; one christened on 11 Oct 1589 Cheddington, Buckingham, England; etc. LDS IGI records are notoriously inaccurate, since they rely on information submitted by individuals and neither require proff nor are they checked for accuracy. They should always be used, therefore, in the absence of primary sources, with a great deal of caution.
Also note that the "birth" dates given for Alice and Robert are actually baptismal dates; English parish records made no listing for birth or death dates, only baptism and burials.