Nanae Chrono was born on 1980-06-18.
Nanae Katō was born in 1976.
Nanae Sasaki was born in 1956.
Nanae Takizawa was born on 1987-09-22.
Nanae Takahashi was born on 1978-12-23.
Nana Tanimura was born on September 10, 1987.
Nanae Sasaki died in 2009.
Nana Aoyama was born on August 5, 1984, in Tohoku Region, Japan.
No, in the manga what happens is unclear, but from the information about how demmons are born to a queen demon (Pandaemonium), this would be impossible. In the anime, it would probably not have been possible either, but they both died before any children could have been born were it possible.
Hokkaido
no
Chrono Trigger happened in 1995.
Chrono Cross happened in 1999.