So in Fausset's Bible Dictionary
The Egyptian king to whom Hoshea, Israel's last king,
applied in the ninth year of his reign for help, when
casting off the obligation to pay tribute to Assyria (2
Kings 17:4). So did not venture to encounter the Assyrian
king Shalmaneser, but deserted his protege, as Egyptian
kings often did (Isaiah 30:3; Isaiah 36:6). Israel was
conquered and Samaria taken. Egyptian monuments illustrate
Scripture; precisely in Hoshea's time a change occurs in the
Egyptian dynasties. Manetho's 25th or Ethiopian dynasty
extended its influence into Lower Egypt in 725 B.C.
So or Seveh answers to "Sabacho" of Manetho, and
"Shebek I" of the hieroglyphics. A little later So contended
with Sargon in southern Israel. A seal of fine clay,
impressed from the bezel of a metallic finger ring, an oval
two inches long by one wide, bears the image, name, and
titles of Sabacho. Some make So the first Sabacho, others
Sabacho II. Tirhakah or Tehrak, the third and last of the
dynasty, is thought to have put So to death. Sabaku
(according to G. Smith's deciphering) married the sister of
Tirhakah who helped Hezekiah against Sennacherib; at
Sabaku's death Tirhakah succeeded, Sabaku's son being set
aside.
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