On this day, in 1803, was born....

On this day, in 1803, was born Robert Gascoyne-Cecil, 3rd Marquess of Salisbury. The arms of the Marquesses of Salisbury are as follows (from Wikipedia):

Quarterly, 1st and 4th, Barry of ten Argent and Azure over all six Escutcheons Sable three two and one each charged with a Lion rampant of the First a Crescent for difference (Cecil); 2nd and 3rd, Argent on a Pale Sable a Conger's Head erased and erect Or charged with an Ermine Spot (Gascoyne)

N.B. I am not seeing the crescent in that achievement.

https://commons.wikimedia.org/wiki/File:Marquess_of_Salisbury_COA.svg#/media/File:Marquess_of_Salisbury_COA.svg

File:Marquess of Salisbury COA.svg - Wikimedia Commons