Count of Poitou in the context of "Alphonse, Count of Poitiers"

Bernard II (died February 844) was the count of Poitou from 840 until his death. His ancestry is uncertain. He was most likely the son of Bernard I [fr], on the basis of onomastics. He was probably a member of the Guilhemid family. His brothers were Turpio (died 863) and Emenon (died 866), counts of Angoulême and Périgord, respectively.

According to Ademar of Chabannes, writing 150 years after the events, Emenon was count of Poitou in 838, when King Pippin I of Aquitaine died. He supported the succession of Pippin's son, Pippin II, but the Emperor Louis the Pious instead bestowed the kingdom of Aquitaine on his own youngest son, Charles. Bernard was resident in Poitiers in 839, when the emperor led an army against it, forcing Emenon to flee to their brother Turpio at Angoulême and Bernard to flee to Renaud, count of Herbauges. Ademar of Chabannes refers to Bernard as a "Poitevin count", comes pictavinus, but it is not clear if he means to imply that Bernard was count of Poitou at this time or just that he held the rank of count and was from the Poitou. Louis named Ranulf I as count of Poitou in Emenon's place.

Emenon (or Emeno) was the Count of Poitou (828–839), Périgord (863–866), and Angoulême (863–866).

It is unknown who nominated him count of Poitou, but it was probably Pepin I of Aquitaine, at whose side he had fought against the emperor Louis the Pious. During his tenure in Poitou, the Empress Judith was imprisoned in the abbey of Sainte-Croix at Poitiers for a while. The country of Herbauges was taken from him and given in benefice to Ragenold of Neustria. When Pepin died, Emenon joined the nobles who proclaimed Pepin II king. Louis invaded Aquitaine and took Poitiers, passing Christmas there in 839 and appointed Ranulf I in his place as count.

Ranulf II (also spelled Rannoux, Rannulf, Ramnulf, and Ranulph) (850 – 5 August 890) was Count of Poitou from 866 and Duke of Aquitaine from 887. On the death of Charles the Fat in 888, he styled himself King of Aquitaine and did so until 889 or his death, after which the title fell into abeyance.

Ebalus, or Ebles Manzer, or Manser (c. 870 – 935), was Count of Poitou and Duke of Aquitaine on two occasions: from 890 to 892; and then from 902 until his death in 935 (Poitou) and from 928 until 932 (Aquitaine).

William IV (c. 937 – 3 February 994), called Fierebras (meaning "Proud Arm", from the French Fier-à-bras (which means Proud-to-Arm), in turn from the Latin Ferox brachium) (which means A Fierce Arm), was the Duke of Aquitaine and Count of Poitou from 963 to his retirement in 990.

William the Great (French: Guillaume le Grand; 969 – 31 January 1030) was duke of Aquitaine (as William V) and count of Poitou (as William II or III) from 990 until his death. Upon the death of the emperor Henry II, he was offered the kingdom of Italy but declined to contest the title against Conrad II.

William VI (1004 – March 1038), called the Fat, was Duke of Aquitaine and Count of Poitou (as William IV) between 1030 and his death. He was the eldest son of William V the Great by his first wife, Adalmode of Limoges.

Odo (French: Eudes or Odon, Latin: Odonis; c. 1010 – 10 March 1039/1040) was Duke of Gascony from 1032 and then Duke of Aquitaine and Count of Poitou from 1038.

William VII (born Peter, Pierre-Guillaume; 1023 – autumn 1058), called the Eagle (Aigret) or the Bold (le Hardi), was duke of Aquitaine and count of Poitou (as William V) between 1039 and his death, following his half-brother Odo.