Research Notes:
A Wortley pedigree, by Hunter, reports that Sir Nicholas de Wortley, son of Sir Nicholas de Wortley, married Sibilla. They were the parents of Sir Nicholas de Wortley, husband of Lucy. [1]
See also, a Wortley pedigree published by Foster. [2]
[1] Joseph Hunter, South Yorkshire, the History and Topography of the Deanery of Doncaster, Vol. 2 (London: 1831), 324.
[2] Joseph Foster. Pedigrees of the County Families of Yorkshire, Vol. 2, West Riding (London: 1874), Wortley, [InternetArchive].