Sweyn II of Denmark
In order to verify whether the body of a woman entombed near Sweyn II of Denmark in Roskilde Cathedral is that of his mother Estrid, mtDNA from pulp of teeth from each of the two bodies was extracted and analysed. The king was assigned to mtDNA haplogroup H and the woman was assigned to mtDNA haplogroup H5a. Based on the observation of two HVR1 sequence differences, it was concluded that it is highly unlikely that the woman was the king's mother.