Adon Olam is a piyyut that became popular in the 15th century and is often attributed to Solomon ibn Gabirol (1021–1058) and less often to Sherira Gaon (900-1001), or his son, Hai ben Sherira Gaon (939-1038). The variation of the piyyut appearing here is the 10 line version familiar to Ashkenazi congregations. (There are also twelve, fifteen, and sixteen line variants found in Sepharadi siddurim.) The rhyming translation here by George Borrow was shared in his tales in The Bible in Spain (1843), p. 222. (The text in the 1913 edition on page 546 is a bit easier to read.) . . .