St. Ellyw, a child or grandchild of king Brychan and a disciple of Cadoc built a church, and lent his name to the town.
1795 – Alexander Raby begins to operate mining and melting of metal ores.
It had closed down by 1844, but the same trackway was used by the Llanelly and Mynydd Mawr Railway more than 80 years later.
R.J. Nevill buys all coal pits belonging to General Ward.
1835 – New Dock opened in Llanelly, the gas company is formed and the local industrialist Alexander Raby dies.
It remained the home for Llanelli RFC for nearly 130 years, and later for the regional side Scarlets, but closed in November 2008 when the teams' new home, Parc y Scarlets, opened in nearby Pemberton.
1911 – Riots occur as a part of railway strikes during 'the great unrest'.
On 17 August, strikers at Llanelli held up trains at one of the level crossings in the town.
Railway trucks carrying detonators were set on fire, causing an explosion that killed four people.
1920 - The Royal Theatre (Haggars) opens in Market Street Llanelli 1930 – Hosts the National Eisteddfod.
1970 - 1972 – "The Day the Pubs Ran Dry"—31 October, when Llanelli RFC defeated the touring All Blacks of New Zealand 9-3 (10-3 in today's scoring system) before a crowd of 26,000 at Stradey Park.
Pubs throughout the town ran dry serving fans celebrating the win.