I had a look at the 1851 Census. An Agnes Twaddle aged 6 was living at High Street, Sanquhar in her grandfather's household. He was John Cringan (born Sanquhar), a Retired Collier aged 58. Also in the household - Agnes Cringan his wife aged 60 born Sanquhar, Janet daughter a Muslin Embroiderer aged 26 unmarried, William Cringan, grandson aged 1 born Glasgow.