Regina, Saskatchewan; Canada
Here is the entry from Etymology Online:
"c.1400, from L. promissum "a promise," noun use of neuter pp. of promittere "send forth, foretell, promise," from pro-"before" + mittere "to put, send" (see mission). Ground sense is "declaration made about the future, about some act to be done or not done." The verb is attested from c.1420. Promised land (1538) is a ref. to the land of Canaan promised to Abraham and his progeny (Heb. xi.9, etc.; Gk. ten ges tes epangelias). Promising "showing signs of future excellence" is from 1601"