Baron-sur-Odon is located some 4 km south-west ofCaen and 10 km north-east ofVillers-Bocage. It is part of the urban area of Caen. Access to the commune is by the D89 fromTourville-sur-Odon in the north which passes through the village and continues south toEsquay-Notre-Dame. The D214 comes fromGavrus in the south-west and also passes through the village as well as Les Crettes and La Bruyère before continuing north-east toFontaine-Étoupefour. Apart from the village there are the hamlets of Tourmauville, Les Crettes, and La Bruyère. The commune is mostly farmland except for some forest in the north.[6][7]
The riverOdon forms the northern border of the commune as it flows north-east to join theOrne in Caen.
The name of the area is attested asBaron in 1138[8] andBaro in the 14th century.[9] The origin of this place name is uncertain. Albert Dauzat suggests thecognomenBaro or a title of German originBaron.[9] René Lepelley meanwhile detects the Gallicbarro meaning "fence" (in old Frenchbarre) or the GermanicanthroponymBaro.[10]
Baron-sur-Odon appears asBaron on the 1750Cassini Map[11] and the same on the 1790 version.[12]
The "Chemin Haussé", which passes through the commune, is a Roman road identified as one of the roads included in theTabula Peutingeriana. The road is mostly straight with embankments hence the name (Haussé means "raised"). This route was used as a line of communication until the end of theMiddle Ages. It is also called the "Path ofDuke William" on some land registers.[13]
In June 1944, duringOperation Epsom, the heights ofHill 112 south-east of Baron-sur-Odon (also in the communes ofFontaine-Étoupefour,Vieux, andEsquay-Notre-Dame) was one objectives for the liberation of Caen. The fighting lasted more than a month.
Party per bend sinister, at 1 Gules, two lions passant guardant Or one over the other to sinister and a croix de guerre in chief border; at 2, Azure semy of wavelets Argent debruised by a horseshoe inverted Or; over all a bend sinister charged with the inscription BARON in capital letters of Sable .
The arms of the Basse-Normandie region are represented by two golden leopards.
The horseshoe symbolizes the escape of William the Conqueror (fromValognes toFalaise in 1047) with his horse shod in reverse to mislead his pursuers. The ripples represent the river Odon.
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^abAlbert Dauzat and Charles Rostaing,Etymological Dictionary of place names in France, Larousse, Paris, 1963(in French)
^René Lepelley,Etymological Dictionary of names of communes in Normandy, Éditions Charles Corlet, Condé-sur-Noireau, 1996, BnF 36174448w p. 59(in French)
^From an explanatory document from the town hall of Baron-sur-Odon: the blazon project was proposed in the municipal council by Mr. Collard and Mr. Maheut and adopted unanimously.