The House of Ham was an ancient noble family from Picardy whose power was reinforced by a castle whose existence is attested in the 10th century.
Origins
Ham is located in Santerre, on the eastern edge of the Somme department with that of Aisne. Le château de Ham is mentioned from the 10th century, then held by a lord of the House of Ponthieu.
First House of Ham
The oldest lord of Ham is a certain Erard I, son of Count Helgaud de Ponthieu. He was still lord of Ham in 932 when Count Herbert II of Vermandois besieged and then took the castle of Ham.[1] Herbert II used the citadel as a base to devastate the regions of Noyon and Soissons.[2] It is very likely that the castle of Ham remained in the possession of the counts of Vermandois for some generations.
No period document gives it any posterity, but this has not prevented not very rigorous historians from asserting the existence of a House of Ham from Erard I who held Ham for two generations, before extinguishing in the person of Pavie of Ham[note 1].
Second House of Ham
A second house of Ham appeared with certainty at the beginning of the 12th century in the person of Eudes/Otto, Lord of Ham cited in 1106 and in 1144. The origin of Eudes is not known.
The lords of this house were:
Eudes I, cited in 1106 and 1144.
Gérard, cited 1182, son of Eudes I, married to Marguerite. He is the first lord to wear the family coat of arms.
Eudes II, nephew of the previous lord, son of Lancelin of Ham, died in 1234 and married to Isabelle de Bethancourt. He had the castle rebuilt in stones.[3]
Eudes III, son of the previous lord, cited in 1260, married to Helvis, Lady of Catheu.
^According to these genealogies, she would be the wife of Otto of Vermandois. But in the current state of knowledge on the Picardy nobility of the year 1000, nothing allows us to make the slightest hypothesis on the origin of Pavie, wife of Otto de Vermandois. cf. Christian Settipani, Ibid.