Jan Bondeson (1992 and 2006) proposed that, while the names "Eliza and Mary Chulkhurst" are not recorded in any early documents and are likely to have been a later addition, the existence of the twins and the claimed 1100 year of birth cannot be dismissed. Although mediaeval chronicles are unreliable, he noted multiple reports in the Chronicon Scotorum, the Annals of the Four Masters and the Annals of Clonmacnoise of a pair of conjoined sisters born in or around 1100, although all three are records of Irish history and none mention Kent as the location. He concluded that the case of Christine McCoy, who survived for eight hours following the death of her polypagus twin Millie, shows that the claimed six hours between the deaths of the Biddenden Maids is plausible, and agreed with Ballantyne's proposal that the idea that the twins were joined at the shoulder is a later misinterpretation of the figures on the Biddenden cake. He also pointed out that although there is no recorded version of the legend prior to 1770, there would have been no possible motive for the villagers of the eighteenth century to fabricate the story.