It seems likely that the Arms ascribed to William Dugdale, as given in the article quoted by Mirl, were granted to, or adopted by, him during his tenure as an Heraldic officer. His father is described as being a steward to the local landowner, so probably an educated man who could have been armigerous but I've been unable to find any record of this. Bear in mind that many families of the Tudor period, and before, had "assumed" Arms, although technically forbidden by a writ of Henry V in 1417, and this practice continued (and continues ?) despite the occasional policing by Heraldic Visitations up until 1688.
Given that William Dugdale was himself one of the "Visitors" I would guess that he ensured his Arms were properly approved !
Whilst researching for this query I came across the arms of Baron Crathorne, a Dugdale descendant, raised to the peerage in 1959. They are described as "Ermine, a cross moline gules, between four hurts". "Hurts" was new to me but I realised that I would have described them as "roundels azure", in other words : blue coloured balls. The term "hurts" comes from the colour and shape of the whortleberry.
I'm always amazed at how much there is to learn in this discipline.
Maec