Knights of the Sky happened in 1990.
Knights of the Sky was created in 1990.
Knights of the Desert happened in 1983.
Knights of Xentar happened in 9801.
Spiral Knights happened in 2011.
Lunar Knights happened in 2006.
Knights Contract happened in 2011.
Knights' Revolt happened in 1522.
Shadow Knights happened in 1990.
Undead Knights happened in 2009.
Arthur's Knights happened in 2000.
Valhalla Knights happened in 2006.
Knights of Legend happened in 1989.