Sharif Hussein ibn Ali was an Arab leader from the Banu Hashim clan, Sharif and Emir of Mecca from 1908 and, after proclaiming the Great Arab Revolt against the Ottoman Empire with Lawrence of Arabia, King of the Hejaz from 1916 to 1924 and, quite briefly, Caliph in 1924. With the Hejaz invaded by the Saudis, he had to flee and be exiled. He claimed he was a 37th-generation direct descendant of Muhammad, as he belonged to the Hashemite family.
His son was Abdullah I and his great-great-grandson, Abdullah II (son of Hussein, son of Talal), is the current King of Jordan.
In January 1924, he arrived in Amman, then TransJordan, here seen received by Lt.-Col. Frederick Peake Pasha, the British Resident Representative (and creator of the Arab Legion):
and another picture during that time:
On March 11 he received pledges of fealty from local Arabs, Arabs from west of the Jordan River and neighboring Arab countries.But what did he think of "Palestine"?
As this article, "Sharif Husayn ibn Ali and the Hashemite Vision of the Post-Ottoman Order: From Chieftaincy to Suzerainty", details, he seemed to think it shouldn't exist:
So, it isn't that some pro-Israel/Zionism advocates think an 'Arab Palestine' wasn't and shouldn't be.
^