I have a Woodward that has a crescent moon in the oval . The gun was ordered by the Earl of a Westmoreland . Nothing in the family seal or coat of arms had a crescent moon . I found, and wish I had it now, a list of single symbols . The crecent moon turns out to represent “ the first son “‘. In my case it was ordered in 1890 . In 1890 the 12 Earl was living but died 3 years later . The 13 Earl , his first son, was in the second tier of great shooters in the “Olly “ Book on Ripon . It is assumed that the gun was ordered for his son and marked to identify the gun in the gun room , at driven shoots, and for those who cleaned the gun, one of many handled by the cleaners , as belonging to the 13th Earl by quick Identification .
It would not surprise me that your symbol was similar . If you can find that list the sheif might represent a Second or third , or so on , son or other relative in the household.,