“…The vernacularisation of written texts in medieval England has long been a popular research area among historical sociolinguists interested in diverse social domains, such as medicine, science, law, or administration (Dodd, 2019;Pahta & Taavitsainen, 2004;Stenroos, 2020). My work tries to extend that line of research to business writing, thereby complementing recent historical sociolinguistic studies about language mixing and standardisation -or supralocal spread (Wright, 2020b)-in the same social domain (Conde Silvestre, 2021;Wright, 2020a).…”