Sources

1) Source: Duchy of Lancaster: Deeds, Series L "Hawise de London, late the wife of Sir Patrick de Chaworth (Cadwic'), and Payn her son and heir:" Evidence for Patrick's wife, Hawise, being Hawise of London. External Link
http://discovery.nationalarchives.gov.uk/details/r/C5687409. Reference: DL 25/2323 (Questionable reliability of evidence)
2) Source: Duchy of Lancaster: Deeds, Series L "Agreement (chirograph) between Patrick de Chaworth (Chauz) and Hawise de London, his wife, and Henry de Tracy, concerning the manor of East Garston and the advowson of the church". External Link
https://discovery.nationalarchives.gov.uk/details/r/C5687385. Reference: DL 25/2299 (Questionable reliability of evidence)