QahtaniteThe terms Qahtanite and Qahtani (قَحْطَانِي; transliterated: Qaḥṭānī) refer to Arabs who originate from South Arabia. The term "Qahtan" is mentioned in multiple ancient Arabian inscriptions found in Yemen. Arab traditions believe that they are the original Arabs. According to Arab tradition, the Qahtanites are from South Arabia, unlike the Adnanites who are from the north of Arabia descended from Ishmael through Adnan. Arab tradition maintains that a semi-legendary ancestral figure named Qahtan and his 24 sons are the progenitors of Yemen who controlled the Arabian Peninsula known as Qahtani.
ShammarThe tribe of Shammar (Šammar) is a tribal Arab Qahtan confederation, descended from the Yemeni tribe of Tayy as they originated in Yemen before migrating into present-day Saudi Arabia. It is the biggest branch of the Tayy tribe, and one of the largest and most influential Arab tribes. The historical and traditional seat of the tribe's leadership is in the city of Ha'il in what was the Emirate of Jabal Shammar in Saudi Arabia.
Himyarite KingdomThe Himyarite Kingdom (Mamlakat Ḥimyar, ממלכת חִמְיָר) or Himyar ( حِمْيَر, Ḥimyar; Ṣayhadic: , Ḥmyrm), historically referred to as the Homerite Kingdom by the Greeks and the Romans (its subjects being called Homeritae), was a polity in the southern highlands of Yemen, as well as the name of the region which it claimed. Until 110 BCE, it was integrated into the Qatabanian kingdom, afterwards being recognized as an independent kingdom. According to classical sources, their capital was the ancient city of Zafar, relatively near the modern-day city of Sana'a.
QaysQays ʿAylān (قيس عيلان), often referred to simply as Qays (Kais or Ḳays) were an Arab tribal confederation that branched from the Mudar group. The tribe does not appear to have functioned as a unit in the pre-Islamic era (pre-630). However, by the early Umayyad period (661-750), its constituent tribes consolidated into one of the main tribo-political factions of the caliphate. The major constituent tribes or tribal groupings of the Qays were the Ghatafan, Hawazin, Amir, Thaqif, Sulaym, Ghani, Bahila and Muharib.
NajdNajd (نَجْدٌ, nad͡ʒd) is the geographic center of Saudi Arabia, accounting for about a third of the country's modern population and, since the Emirate of Diriyah, acting as the base for all unification campaigns by the House of Saud to bring Arabia under a single polity. Historic Najd was divided into three modern administrative regions still in use today. The Riyadh region, featuring Wadi Hanifa and the Tuwaiq escarpment, which houses easterly Yamama with the Saudi capital, Riyadh since 1824, and the Sudairi region, which has its capital in Majmaah.
