Lord Samuel Mueller, Steadholder Mueller, (1845 - 1916 PD) was a Grayson citizen and a prominent conservative steadholder. He swore his oath of fealty to Protector Benjamin IX's grandfather, in the later half of the 19th Century PD. Steadholder Mueller was finally impeached and executed for treason in 1916 PD, after his involvement in the Havenite-Masadan Operation Hassan, which led to the death of several high-ranking Manticoran and Grayson politicians, was discovered. (HH9) His son Travis succeeded him. (HH11)