Arthur was born in the third quarter of 1884. He is the youngest son of Thomas Antwis Collinson and Margaret Alice. His siblings are: James W., William L., Nellie, Frederick B., and youngest Alice M.
On the 1901 census the family are living at 4 College Road, Great Crosby. Thomas is a Bootmaker, with a business based in Bold Street, Liverpool and shops in Chester and Southport. James, William and Frederick are listed as Bootmaker Shopkeepers (presumably in the family business). Both Arthur and Alice are at school. The family also have two domestic servants living with them.
Arthur went to Merchant Taylor School and went on to pass the London Matriculation with honours. Arthur studied Law, gaining a 1st class degree and was awarded the Atkinson Conveyancing Gold Medal, The Timpron Martin Gold Medal and the Enoch Harvey Prize for the best Liverpool candidate. Arthur joined Walton and Co. solicitors in London.
On the 1911 census Arthur is recorded as a Boarder at 39 Shrubbery Road, Streatham, Surrey. His occupation is Solicitor.
At some stage Arthur had been a member of 2nd V.R. King’s Liverpool Regiment, which would become the 6th Battalion. Here Arthur learned to shoot and was part of the Bisley teams for three years, along with wining a Clement Smith Gold medal.
On the day war was declared in 1914 Arthur enlisted as a Gunner with the Honorary Artillery Company, Service Number 444. He soon obtained a commission in the East Surrey Regiment, where he was promoted from Lieutenant to Captain on 9 May 1915. At this time Arthur would have been in billets in Shoreham before moving to Aldershot for final training. Orders came at the end of August for the move to France. Arthur served with the 9th Battalion, which landed at Boulogne on 1 September 1915. Part of the 72nd Brigade, 24th Division Arthur would have experienced long marches before joining the reserve for the British assault at Loos.
Arthur was reported missing at Loos on 25 September 1915. It was later recorded that he died on that day, 25 September 1915 aged 31 years.
Arthur was awarded the 1915 Star, British War and victory medals.
Arthur is commemorated at Loos Memorial, at Crosby Congregational Church and the Crosby and Blundellsands Civic Memorial. He is also remembered on the family gravestone in St Helens Cemetery.