Clinch believed that the evidence pointed to the twins having existed but that they had lived in the 16th century, rather than the early 12th century as generally claimed. They are not, however, mentioned in any journals or books from the period. This points against their having lived in the 16th century; the case of Lazarus and Joannes Baptista Colloredo (1617 – after 1646) had prompted great interest in conjoined twins, and conjoined sisters surviving to adulthood in south-east England would have been widely noted.