From Online Etymology Dictionary
condom (n.)
1706, traditionally named for a British physician during reign of Charles II (a story traceable to 1709), but there is no evidence for
that. Also spelled condam, quondam, which suggests it may be from
Italian guantone, from guanto "a glove." A word omitted in the
original OED (c. 1890) and not used openly in the U.S. and not
advertised in mass media until November 1986 speech by Surgeon General
C. Everett Koop on AIDS prevention.
scumbag (n.)
"condom," by 1939, slang, from scum + bag (n.). Earlier (by 1817) it was used in sugar refining as the name of a frame covered in coarse
cloth used in straining. Meaning "despicable person" is attested by
1971.
sheath (n.)
Old English sceað, scæð, from Proto-Germanic *skaithiz (source also of Old Saxon scethia, Old Norse skeiðir (plural), Old Frisian
skethe, Middle Dutch schede, Dutch schede, Old High German skaida,
German scheide "a sheath, scabbard"), according to OED, possibly from
root *skei- "divide, split" (see schizo-) on notion of a split stick
with the sword blade inserted. Meaning "condom" is recorded from 1861;
sense of "close-fitting dress or skirt" is attested from 1904.
Etymology - from the Wikipedia:
The term condom first appears in the early 18th century. Its etymology
is unknown. In popular tradition, the invention and naming of the
condom came to be attributed to an associate of England's King Charles
II, one "Dr. Condom" or "Earl of Condom". There is however no evidence
of the existence of such a person, and condoms had been used for over
one hundred years before King Charles II ascended to the
throne.
A variety of unproven Latin etymologies have been proposed, including
condon (receptacle), condamina (house), and cumdum (scabbard
or case). It has also been speculated to be from the Italian
word guantone, derived from guanto, meaning glove. William E.
Kruck wrote an article in 1981 concluding that, "As for the word
'condom', I need state only that its origin remains completely
unknown, and there ends this search for an etymology." Modern
dictionaries may also list the etymology as "unknown".
The story of the condom
The first known documentation of the “condom” was that of King Minos
of Crete in about 3000 B.C. King Minos, who ruled Knossos, was a
figure of history from the Bronze Age. (Read more here).
The Ancient Egyptians were one of the first civilizations to use
sheaths. (More here).
The Ancient Roman civilization influenced the modern world in many
ways, including architecture, government, philosophy, language, and
even condoms. (More here).