Broût-Vernet - Chapel / St. Gilbert

There are two chapels nearby Broût-Vernet. Both are privately owned and on private property. One of them is connected to Saint Gilbert, who had it built for his wife and his daughter Petronella. I could not find out, which one..
This chapel is part a farm. I tried to enter the property, but the owners, obviously already tetchy, by people being interested in their romanesque barn, shouted at me, before their dogs even started to bark. As they seemed to be really unfriendly I stayed away and only took this photo walking a neighbouring but public path.