Short answers, pulled from the story.
Stuart Fergusson Victor Sutcliffe entered the world on the 23rd of June 1940 at Edinburgh Royal Maternity Hospital. His father Charles Sutcliffe moved to Liverpool in 1943 to work for the War Office while his mother Martha taught at an infants' school.
Sutcliffe joined Lennon McCartney and Harrison who were then called the Silver Beatles in May 1960. He purchased a Höfner 500/5 model bass guitar from Frank Hessey's Music Shop but often blistered fingers due to lack of practice before quitting the band in July 1961.
He died before they arrived at Sefton General Hospital after collapsing again on the 10th of April 1962. The cause was a cerebral haemorrhage specifically a ruptured aneurysm causing paralysis due to bleeding into the right ventricle.
Astrid Kirchherr met Sutcliffe at the Kaiserkeller where she watched the Beatles perform and lived with her widowed mother Nielsa Kirchherr on Eimsbütteler Strasse in Altona. They got engaged in November 1960 exchanging rings according to German custom and he moved into the Kirchherr family house.
Sutcliffe lies buried in Huyton Parish Church Cemetery also known as St Michael's in Merseyside. He died on the 10th of April 1962 while returning to the UK from Germany after suffering severe headaches and acute light sensitivity.