Complex sentence: In Dawn of Sorrow, he is 56 according to the Konami manual, which indicates he was born in 1980, and would place him at age 19 in the Demon Castle Wars of 1999.
Split into simpler sentences: In Dawn of Sorrow, he is 56 according to the Konami manual, which indicates he was born in 1980. This would place him at age 19 in the Demon Castle Wars of 1999.