Noah's grandfather, Methuselah, was the man who the Bible said lived the longest (986 yrs.).
Apparently, he died in the Flood.

God instructs Noah to create the Ark (huge boat) of cypress - Genesis 6:9-22
Noah's family & numerous animals enter the Ark to survive the Flood - Genesis 7
Flood waters recede, Noah's family & animals exits the Ark - Genesis 8
The Ark came to rest on Mount Ararat near the borders of Turkey, Armenia and Iran.
God's covenant with Noah's family and descendants - Genesis 9