LSA 1830; MD Erlangen 1851; MD Lambeth 1855; LLD.
Grindrod was a well known doctor in Manchester. He was the first medical man to join the teetotal movement, taking the pledge in 1833 and lecturing and publishing in support of the movement. He was president of the Manchester and Salford Temperance Society in 1841. He was a member of Manchester Medical Society and was friends with many of the great Manchester medical men of the time. Grindrod was also a member of the Medical Society of London and a fellow of the Royal Historical Society. By 1860 Grindrod had moved to Malvern, Wiltshire, where he was practising as a hydropathic physician. He died in Malvern on 18 November 1883, aged seventy three.