The larger portion of our birth years table contained only one entry per name, which should generally not be the case if the entry is correct.

As a one-time measure, we've purged the accepted birth years table of all questionable data.  All entries listed in this thread remain.  We'll be more closely scrutinizing new birth year submissions going forward and have added backtracking so we can research the additions if necessary.

Note that this purge does not affect existing profiles - only new submissions with changes to cast or crew.  In that case, if a cast/crew member has a birth year and there is no corresponding accepted entry (matched by name only), you'll get the extra checkbox section and will need to document the addition.