“Gilbertus de Gant” donated property to the canons of Thornton by charter dated to [1139/47], witnessed by “Gaufrido et Roberto et Baldewino fratribus Gilberti de Gant…”. The Stemma fundatoris of Bardney Abbey names “Gilebertum…et Robertum fratrem eius” as sons of ”Walterus”, adding that Gilbert was Earl of Lincoln. "Gilbert Earl of Lincoln" donated "land in Spetona" to Bridlington Priory by undated charter, witnessed by "Geoffrey de Gaunt, Robert de Gaunt, Philip de Kyma dapifero…". The Red Book of the Exchequer refers to "Robertus de Gant v m" in Yorkshire in [1161/62]. “Robertus de Gaunt et Aeliz Paganella uxor sua et Avicia filia eorum” donated property to the hospital of St John of Jerusalem by charter dated to [1166/77], witnessed by “…Henrico de Gaunt…”. The Red Book of the Exchequer, listing scutage payments in [1190/91], records "Robertus de Gaunt" paying "xxxiv l v s iv d" in Lincolnshire.
A manuscript genealogy of the Gant family records that “Roberto filio Walteri” succeeded his niece in the Gand inheritance, died in 1192 and was buried “apud Vawdye”. “Robertus de Gaunt, filius Walteri de Gaunt” confirmed donations of property to Bridlington Priory by “Walterus de Gaunt pater meus et Gilbertus de Gaunt comes Lincolniæ frater meus”, by undated charter. 1