A note here says that Alderman George O'Neil, Labour, of 14 Inverlael Avenue died on the date you write about aged 56, when he was about to become the mayor. Born 1879.
http://www.boltonsmayors.org.uk/kirkman-b.htmlHowever in the Salesian College magazine of 1934, it is reported that a 17 year old former pupil who was the son of a town Alderman, died tragically under the wheels of a steam wagon in October 1932 in Bolton, having been blown from his bicycle in a gale.
That's obviously his son. Perhaps they're buried together?