Bertha+ Roberts 
Bertha+ was born about 1040 in Gostenois, Normandy, France. She died in Darley, Derbyshire, England.General Notes
SOURCES: LDS FHL AF # (familysearch.org)
AWTP:
"Families of Sequoyah County,OK & Others" Sharen Neal MJR6387@@aol.com (who has generously contributed the following at ATWP):
"Wife of Henry de Ferrers and mother of Enguinulf, William and Robert. [Falaise Roll, p. 56]
m. Henry I de Ferrers; mother of William/Engenulf de Ferrers. [GRS 3.03, Automated Archives , CD#100]
Dau of Engenulph Wn. Roberts; m. Henry de Ferriers, Sire de Ferrieres and Chambrais in Norman dy; mother of Robert de Ferrieres. [Charlemagne & Others, Chart 2954]
m. Henry de Ferrers; mother of Robert, Eugenulph/Engenulf, William, Amicea, Emmeline, Gundred a. [WFT vol 11 Ped 4329]"
‌Bertha+ and Henry I+ were married in a religious ceremony in 1061. They had a son and a daughter, named Robert De+ and Gundella De+.
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Children
Robert De+ Ferrers
Robert De+ was born in 1062 in Darley, Derbyshire, England. He died at the age of 77 in 1139 in Chartley, Staffordshire, England.