The date of creation of Boyd's title can be further narrowed to between 1451 and 15 June 1452. On the latter date, the King confirmed the charter of Robert Boyd, Lord of Kilmarnock and of Dalry, conveying one-third of the lands of Lynn in Dalry to Robert Boyd of Lynn. Only three months earlier, Andrew Lynn in Dalry was described in another charter as Lord of that Ilk, meaning lord of a property of the same name as his family name.