Albert Sidebottom married Sarah Rhodes in a civil ceremony registered at Stockport, between October and December 1887. Abraham was their eldest son and was 11 at the time of the 1901 Census. He had a younger brother, Arthur, then aged 5. Albert was not at home, at 4 John Street, Reddish, when the Census was recorded. This seems to have been a temporary absence as, by the 1920s, he and Sarah are recorded as living at 15 Stanhope Street, Reddish.
It is possible to deduce some information about Abraham's army service. The prefix "M2" indicates he served with one of the Army Service Corps' Mechanical Transport Companies and this was attached to the 2nd New Army, formed in December 1914. Abraham would not have served before then. The inclusion of the New Army number was discontinued in November 1916, so he must have joined before then.
His ASC Company is not noted in the records of the Commonwealth War Graves Commission and this strongly indicates that he had been wounded, or become ill, some considerable time before he died and was no longer attached to a particular unit. His medal entitlement records are available on-line at the National Archives (and can be viewed for a charge of £3.50, in 2005) but have not been examined for this project. They would probably indicate his original unit. The fact that he had an entitlement to medals confirms he must have served overseas.
So, it can be assumed that Abraham enlisted sometime between the autumn of 1914 and the autumn of 1916. He returned home, injured or unwell, by the end of 1916. In the intervening period, he had served abroad almost certainly involved in delivering supplies and ammunition to front line troops. Abraham died of pneumonia, no doubt as a result of the influenza epidemic which caused millions of deaths, worldwide, in 1918.