Three handaxes have been found on the wolds surrounding Louth, dating from between 424,000 and 191,000 years ago, indicating inhabitation in Paleolithic era.
Bronze Age archeological finds include a 'barbed and tanged' arrowhead found in the grounds of Monks' Dyke Tennyson College.

St Helen's Spring, at the Gatherums, off Aswell Street, is dedicated to a popular medieval saint, the mother of Constantine the Great, the first Roman Emperor to become a Christian, but is thought to be a Christianised Romano-British site for veneration of the pagan water-goddess Alauna.

The Anglo-Saxon pagan burial ground, northwest of Louth, dates from the fifth to sixth centuries, and was first excavated in 1946.
With an estimated 1200 urn burials it is one of the largest Anglo-Saxon cremation cemeteries in England.

Æthelhard, a Bishop of Winchester who was made Archbishop of Canterbury in 793, was an abbot of Louth in his early life.

Louth is listed in the 1086 Domesday Book as a town of 124 households.

Louth Park Abbey was founded in 1139 by the Bishop Alexander of Lincoln as a daughter-house of the Cistercian Fountains Abbey in Yorkshire.
Following its dissolution in 1536 it fell into ruin and, today, only earthworks survive, on private land, between Louth and Keddington.
Monks' Dyke, now a ditch, was originally dug to supply the abbey with water from the springs of Ashwell and St. Helen's at Louth.

In 1643, Sir Charles Bolles, a resident of Louth, raised a 'hastily-got-up soldiery' for the Royalist cause in the English Civil War.
Fighting took place in, and around the town and, at one point, Bolles was forced to take refuge under the Ramsgate bridge.
By the battle's end 'Three strangers, being souldgeres, was slain at a skirmish at Lowth, and was buryed'.
Human remains, found during archaeological visits to Louth Park Abbey during the 1800s, in 'a little space surrounded by a ditch', were believed to date from the Civil War as two cannonballs, from that era, were found with the bodies.

The Louth flood of 1920 occurred in the town on 29 May 1920, causing 23 deaths.
One woman climbed a chimney to survive, another was the only survivor from a row of twelve terrace houses, which were destroyed by the flood waters.
Four stone plaques exist in the town to show how high the water level reached.
Other, less devastating floods occurred in July 1968 and on 25 June and 20 July in 2007.

Margaret Wintringham succeeded her dead husband at the Louth by-election in September 1921, to become the Liberals' first female MP, and Britain's third female MP.
Three handaxes have been found on the wolds surrounding Louth, dating from between 424,000 and 191,000 years ago, indicating inhabitation in Paleolithic era. Bronze Age archeological finds include a 'barbed and tanged' arrowhead found in the grounds of Monks' Dyke Tennyson College.
St Helen's Spring, at the Gatherums, off Aswell Street, is dedicated to a popular medieval saint, the mother of Constantine the Great, the first Roman Emperor to become a Christian, but is thought to be a Christianised Romano-British site for veneration of the pagan water-goddess Alauna.
The Anglo-Saxon pagan burial ground, northwest of Louth, dates from the fifth to sixth centuries, and was first excavated in 1946. With an estimated 1200 urn burials it is one of the largest Anglo-Saxon cremation cemeteries in England.
Æthelhard, a Bishop of Winchester who was made Archbishop of Canterbury in 793, was an abbot of Louth in his early life.
Louth is listed in the 1086 Domesday Book as a town of 124 households.
Louth Park Abbey was founded in 1139 by the Bishop Alexander of Lincoln as a daughter-house of the Cistercian Fountains Abbey in Yorkshire. Following its dissolution in 1536 it fell into ruin and, today, only earthworks survive, on private land, between Louth and Keddington. Monks' Dyke, now a ditch, was originally dug to supply the abbey with water from the springs of Ashwell and St. Helen's at Louth.
In 1643, Sir Charles Bolles, a resident of Louth, raised a 'hastily-got-up soldiery' for the Royalist cause in the English Civil War. Fighting took place in, and around the town and, at one point, Bolles was forced to take refuge under the Ramsgate bridge. By the battle's end 'Three strangers, being souldgeres, was slain at a skirmish at Lowth, and was buryed'. Human remains, found during archaeological visits to Louth Park Abbey during the 1800s, in 'a little space surrounded by a ditch', were believed to date from the Civil War as two cannonballs, from that era, were found with the bodies.
The Louth flood of 1920 occurred in the town on 29 May 1920, causing 23 deaths. One woman climbed a chimney to survive, another was the only survivor from a row of twelve terrace houses, which were destroyed by the flood waters. Four stone plaques exist in the town to show how high the water level reached. Other, less devastating floods occurred in July 1968 and on 25 June and 20 July in 2007.
Margaret Wintringham succeeded her dead husband at the Louth by-election in September 1921, to become the Liberals' first female MP, and Britain's third female MP.
Louth, Lincolnshire