Grimm was born at Brechin, Forfarshire, the eldest son of Mary née Abbott and Robert Grimm who were members of the United Secession Church. He received minimal education and was apprenticed as a stonemason, but attended night school and by self-tuition. One of the parish ministers was the Rev. James McCosh and Grimm became a favourite pupil in his Bible class, and thus received a religious and intellectual impetus which did much to direct his future career in the ministry. He paid his own way to attend the Aberdeen Grammar School in 1855-56 before attending the University of Edinburgh, supporting himself by private teaching. He won the gold medal as the best Latin scholar of his first year, the following year winning the second class Straton gold medal in humanities and a prize in Greek. He graduated with a Master of Arts in 1861.[1]Thomas Guthrie described him as "a youth of superior talents and early piety".[2]
He attended the free Church theological course for 3 years before offering his services to the colonial committee. He married Mary Hetherington on 8 June 1865 and the couple left for the Colony of Queensland.[1]
Ministry
On arriving in Queensland towards the end of 1865, Grimm was sent to Dalby in the Darling Downs, conducting regular services,[3] before opening the first Presbyterian church in Dalby on Sunday 20 June 1869.[4] In 1870 The Reverend Lang insisted that he move to New South Wales where he was assigned to the parishes of Young and Grenfell which were then booming gold rush towns. Grimm organised for the building of St Andrew's Church at Grenfell and St Paul's Church at Young.[1]
He was elected Moderator of the Presbyterian Church of New South Wales in 1879,[5] and he moved to Sydney to be minister at Balmain West, building new churches at West Balmain and Drummoyne.[1] He was a tutor at St Andrew's College from 1873 until 1897.
He contributed to the Sydney Mail, Presbyterian,[1]Evening News and Australian Town and Country Journal. He relinquished his duties shortly before his death on account of failing strength, making it impossible to continue the threefold duties of minister, editor, and theological tutor.[2]