The Jewish Encyclopedia, long before the Balfour Declaration, speaks of Palestine and the people of Palestine. The entire 1906 edition of The Jewish Encyclopedia is available online at: http://www.jewishencyclopedia.com/. You can see the results of a search for the word Palestine in the online version at: http://www.jewishencyclopedia.com/search?utf8=%E2%9C%93&keywords=palestine&commit=search.
A page of Jewish seals shows the seal of a Palestinian Jew. The seal has both Hebrew and Arabic script. Before Balfour/1917, PalestinianJews, Palestinian Christians, and Palestinian Muslims coexisted peacefully.