"Sichilde (ca. 590–627) was a Frankish queen consort in 618–627; married to Chlothar II.
She was the daughter of the Count Brunulphe II of the Ardennes and the sister of Gomatrude (598–630), who was married to Dagobert I; her maternal grandfather was royal maior domus. She married Chlothar in about 618. In 626 or 627, she was suspected of having had a relationship with Boso, son of Audolène of Étampes, and Boso was killed by the duke Arnebert on the order of Chlothar." - (en.wikipedia.org 11.08.2021)
en