prelate (n.)

"person devoted to religious work," especially "child dedicated by his or her parents to monastic life and raised and trained in a monastery and held in monastic discipline," 1756, from Medieval Latin oblatus, noun use of Latin oblatus, variant past participle of offerre "to offer, to bring before," from ob- (see ob-) + lātus "carried, borne," used as past participle of the irregular verb ferre "to bear."

Presumably lātus was taken (by a process linguists call suppletion) from a different, pre-Latin verb. By the same process, in English, went became the past tense of go. Latin lātus is said by Watkins to be from *tlatos, from PIE root *tele- "to bear, carry" (see extol), but de Vaan says "No good etymology available."

late 14c., preferren, "to put forward or advance in rank or fortune, to promote (to an office, dignity, or position); further (one's interest)," from Old French preferer (14c.) and directly from Latin praeferre "place or set before, carry in front," from prae "before" (see pre-) + ferre "to carry, to bear," from PIE root *bher- (1) "to carry," also "to bear children."

The meaning "to esteem or value (something) more than others, set before others in liking or esteem" also is recorded from late 14c. and is now the usual sense. The other sense in English is preserved in preferment.