Nielsen Hayden genealogy
Family: Alan III / Bertha of Brittany (F10584)
m. Abt 1137-
Father | Male
Alan III
Born Bef 1100 Died 15 Sep 1146 Brittany, France 
Buried Married Abt 1137 [1] Father Stephen of Brittany | F513 Group Sheet Mother Hawise | F513 Group Sheet
Mother | Female
Bertha of Brittany
Born Abt 1119 Died Between 1162 and 1167 Buried Father Conan III of Brittany | F8110 Group Sheet Mother Maud fitz Roy | F8110 Group Sheet
Child 1 | Male
+ Conan IV
Born Abt 1138 Died 20 Feb 1171 Buried Spouse Margaret of Huntingdon | F10579 Married 1160 England 
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Sources - [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.