Ballykilmurry school was a two teacher school, opened in 1910. This school closed in 1966 when a new three teacher school was built on the present site in Ballinamere.
While working in Tullamore Distillery since 1864, D. E. Williams had also established his own grocery business in 1891 in Tullamore. This rapidly expanded to 26 bars, groceries and hardware stores all within a 30-mile radius of Tullamore. The branch houses, mostly licensed, were located in neighbouring towns, and the company expanded into an important wine and spirit business, general wholesale, tea and mineral waters. D. E. Williams Ltd. also had interests in malting and seed/corn dealing, which expanded in the 1950s as it became the supplier of malt to other distillers and brewers through the Midland Malting Co. Ltd. in 1968.
In 1961, D. E. Williams Ltd. expanded into the supermarket business and established the chain of Five-Star supermarkets, some on the sites of the original Williams branch shops. In 1966, the Williams Group Tullamore Ltd was incorporated and comprised the companies D. E Williams Ltd., B. Daly & Co. Ltd, Keily & Co. Ltd., and Irish Mist Liqueur Company.
In 1997 both companies were sold to Greencore plc.
Captain Bernard Daly took over Tullamore Distillery in 1887. Daniel E. Williams (1848–1921) who had joined the distillery in 1864 as an engineer, was promoted by Daly to General Manager of the Distillery in 1885. The distillery grew in strength and in 1903 was incorporated into the company B. Daly & Co., Ltd. The most famous brand produced was the whiskey, Tullamore DEW. Captain Daly held a portion of the shares in B. Daly & Co. Ltd., and the Williams family held the remainder. D. E. Williams died in 1921 and the business was taken over by his son, Captain John Williams. In 1931, Captain Daly resigned as director of the board and the Williams family acquired all shares in the company. In response to falling whiskey sales in the 1940s, an associate company, The Irish Mist Liqueur Co. Ltd was formed in 1948 to bring a new product to the market. In 1952, the brand name Tullamore DEW was sold to Irish Distillers Ltd, and B. Daly & Co. Ltd ceased distilling and diversified into chicken production.
Tullamore GAA Club was founded on 26 May 1888 and won its first title in 1890 when it defeated Banagher in the final of the Offaly Championships (football). Its club colours were initially red and green, but inspired by the 1916 Rising, the club changed its colours to green, white and gold in 1917. In the early 1920s, Tullamore gave the county team the right to wear the tricolour as the county colours and adopted the blue and white colours which are still used today.
Having played in rented fields at Church Road, and then Tinnycross, the club acquired land at Ballyduff Park in the 1910s. In 1932, it developed a site on the Arden Road and in 1934, O'Connor Park was opened. Following the decision in 2001 to let Offaly County Board lease O'Connor Park, O'Brien Park was developed for use by Tullamore GAA Club.
Offaly GAA Southern Committee was a sub-committee of Offaly GAA consisting of delegates representing Banagher, Belmont, Birr, Clareen, Coolderry, Cloghan, Doon, Drumcullen, Eglish, Erin's Own, Ferbane, Kilcormac, Killoughey, Kinnitty, Lusmagh, Seir Kieran and Shinrone clubs.