Saturn in Scorpio

The two old malefics, a category word for Mars and Saturn, share this sign, with Mars as owner and Saturn as guest. In Lilly 1659 Saturn receives only the last three degrees as terms, and Ptolemy (Ashmand's 1822 translation) gives him no part in the triangle of Cancer, Scorpio and Pisces.

Cold and moist in Lilly's account, Scorpio shares its cold with Saturn and none of its moisture, and Raphael 1828 files it as fixed and mute among a long list of labels. Those labels are all the sources offer, since none of them describes the pair as a character. Ptolemy's note on the sign speaks of thunder and earthquakes, and that remark concerns the air and ground only.

Modern popular astrology, which often gives this sign to Pluto and has no source for it here, reads endurance, privacy and long reckonings into the pair. Treat all of that as a modern layer. Saturn passes through in two or three years, so a whole cohort of births has it in common.