Three kings presided over the entire kingdom to start with. Saul, David, and Solomon.
Then beginning with Solomon's son, Rohoboam there was 20 kings who ruled the Southern kingdom covering a time period of 339 years. Too many to list here.
Nebuchadnezzar
The first king of Spain was Charles I. He became the first king after the Kingdom of Castile and Kingdom of Aragon combined.
The first king of Spain was Charles I. He became the first king after the Kingdom of Castile and Kingdom of Aragon combined.
King Babur's first kingdom was Farghana, currently Uzbekistan.
The first king was: Jeroboam The second king was: Nadab
The Neo-Babylonian Empire (also called the Chaldean Empire) led by King Nebuchadrezzar conquered the southern Kingdom of Judah in 586 BCE.
Rehav'am (Rehoboam), the son of King Solomon, became king over the southern kingdom, after the ten northern tribes broke away under Yerav'am (Jeroboam). The southern kingdom, known as Judah, consisted of Judah and Benjamin, two tribes, and continued until the First Destruction a few centuries later. Whereas the ten northern tribes were collectively called Israel, and went lost after their exile, which occurred about 275 years after the split (133 years before the First Destruction).
George the First
The question as posed is impossible to answer. Reasons: Israel was the Northern Kingdom and Judah was the Southern Kingdom. As a result it is hard to tell which one you are referring to when you say "The Southern Kingdom of Israel". Secondly the Kingdoms of Israel and Judah reigned for a few hundred years and therefore had many kings. Without specifying an exact event or year or period, it would be impossible to know which king you want to know about.
2 Kings 12:21New International Version (NIV) 21 The officials who murdered him were Jozabad son of Shimeath and Jehozabad son of Shomer. He died and was buried with his ancestors in the City of David. And Amaziah his son succeeded him as king.Joash was King of Judah - the Southern Kingdom. Shortly after the death of King Solomon, the Kingdom divided into the Northern Kingdom Israel and the Southern Kingdom Judah. This can be read in 1 Kings 12.
Many feel that King Onjo was the first king of Baekje, in 18 BCE .
The United Kingdom first came into existence with the union of England, which included Wales, and Scotland in 1707. Queen Anne was the monarch then. She died in 1714. After her came George I, so he could be said to be the first King of the United Kingdom.