No.4 is the achievement of Ingleton impaling "Sables semee de crescents Or a lion rampant argent". Clements Beaumont was the second wife of Robert Ingleon from the family of Whitley Beaumont of Yorkshire.

There is some confusion over the achievement which should be shown for this union. On the funeral brass of 1472 there are shown six crescents, and the blazon of Beaumont is now generally taken as "Gules a lion rampant argent langued and armed azure within an orle of 6 crescents of the second ". In 1891 R.T. Russell writing in the journal of the Cambridge University Association of Brass Collectors, says that Mr. Scott Gatty, York Herald, "informs me that Gules a lion rampant between 5 crescents argent are the arms of Lester and suggests that this may be the same coat only with 6 crescents", but Russell then says that he is inclined to think that this coat of arms is the reverse of that of the Lesters, as there appears to be traces of white metal on the field of the shield and the lion may possibly be gules. Boutell in "Heraldry" (1863 edition, p. 171) says, "An example of the use of the fleur de lys for marking cadency occurs in one of the shields of the Spilsby brass which bears for de Beaumont, azure semee de Lys a lion rampant Or. Other branches of the same family change the tinctures to gules and argent and they substitute an orle of silver crescents for the field florettee and they place over all either an azure label or a bendlet componee argent and gules. In the Calais roll Sir Thomas Beaumont bears the crescents and Sir John the younger adds a label to a similar shield".

It may be that in the course of time the azure of the Spilsby brass was taken as sable by the artist who made the window, and that the 6 crescents on the brass were all that the engraver could artistically place on the shield.