General Notes

Fulk's mother may be Adele de Amboise (instead of Adelaide of Gatinais) SOURCES:
www.aragon10.free-online.co.uk/charlemagne.htm

Foulques (Fulco) first appears as a witness to a charter of count (later king) Eudes, abbot of of Saint Martin de Tours, in April 886 [BEC 30 (1859): 431-3]. He first appears with the title of viscount in a charter of viscount Hardrad of Tours on 29 September 898 [Signum Fulconis vicecomitis, Mabille (1871), xcii-xciii]. In a charter of a certain Archambaldus dated 5 July 905, he appears as viscount of both Angers and Tours [Signum Fulconis Turonorum et Andecavorum vicecomitis, Mabille (1871): xcv], but does not appear to have the latter title for long, for a charter dated 30 October 909 has Tedbaldus signing as viscount of Tours, immediate after "count" Fulco [Signum domni Fulconis Andecavorum comitis; signum Tedbaldi Turonorum vicecomitis, Mabille (1871), xcviii]. As shown by Werner, this use of the comital title by Foulques comes from a brief period when he was count of Nantes, confirmed by the appearance of Foulques as count of Nantes and viscount of Angers in a charter of count (later king) Robert, abbot of Saint-Martin de Tours, dated 31 March 914 [S. Fulconis Namnetens. comitis et Andegavensis vicecomitis, Werner (1958), 287], and by the statement of the Chronicle of Nantes that Foulques ("Fulco Ruffus") had possessed Nantes [Chr. Nantes, 122]. Foulques had apparently obtained the countship of Nantes between 907 (the death of Alain Barbetorte) and 30 October 909, and lost it before 919 [see the detailed discussion in Werner (1958), 265-8, 284-8]. He appears as abbot and viscount in a charter of a certain Fulculf dated 13 August 924 [Signum Fulconi[s] abbatis atque vicecomitis, Cart. S.-Aubin 1: 60], and calls himself count of the Angevins and abbot of Saint-Aubin d'Angers and Saint-Lézin in a charter of 929 [Cart. S.-Aubin 1: 203-4 (see below)]. However, as he was still not signing as count in two charters of Hugues le Grand on 3 May 930 [S. Fulconis vicecomitis, Werner (1958), 284] and 26 March 931 [Signum domni Fulconis, Mabille (1871), ciii], he does not appear to have been recognized as count of Anjou by his Robertian lords until sometime between 931 and 26 December 940, when he appears as count in a charter of Hugues le Grand [Signum Fulconis comitis, Mabille (1871), cv-cviii, erroneously dated 943; see Werner (1958), 286]. Foulques was still living in [13×31] August 941, when he signed a charter along with his son Foulques [Signum domni Fulconis. Signum Fulconis filii ipsius, Mabille (1871), cv]. See Werner (1958), 264-279, and the detailed list of charters mentioning Foulques on pp. 283-6, many of which are printed in full in Mabille
Both Foulques and his son Foulques witnessed a charter between 13 and 31 August 941, so Foulques was still living on the former date. A charter was witnessed by a count Foulques of Anjou in May 942 [RHF 9: 723], often identified as Foulques II, but, as Werner points out, it is not certain which Foulques was the signer of that charter, and the date of death of Foulques I remains unknown. Nevertheless, given his long career, he probably did not live long after 941.
The name of Foulques's father is confirmed by a charter of 929 [Cart. S.-Aubin 1: 203-4 (see below)], but nothing else is known about him. For Ingelger as a figure of legend, see the Commentary section.

(from: (1871).http://sbaldw.home.mindspring.com/hproject/prov/fulk0001.htm)

SOURCES:
Ancstry/Kirk Larson
http://sbaldw.home.mindspring.com/hproject/prov/fulk0001.htm
Wikipedia.org
www.aragon10.free-online.co.uk/charlemagne.htm