This means that your great, great, great great, great, great -- with about five million "greats" in there -- grandmother was probably the same great, great, great, great grandmother with five million "greats" in there as Holly up here.
这样的话，你的曾曾曾。。。祖母 大概往上推1千万代， 可能和在这里的霍利 往上推1千万代的曾曾曾。。。祖母 是相同的。