1838, earlier cater-cornered (1835, American English), from now-obsolete cater "to set, cut, or move diagonally" (1570s), from French catre "four," from Latin quattuor (from PIE root *kwetwer- "four"). Compare carrefour. Related: Catty-corner; cattycorner.
<a href="https://www.etymonline.com/word/kitty-corner">Etymology of kitty-corner by etymonline</a>
Harper, D. (n.d.). Etymology of kitty-corner. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/kitty-corner