Oldcastle, Co. Meath, Ireland

Oldcastle (Irish: tSeanchaisleán) is a town in County Meath, Ireland. It is located in the north-west of the county near the border with Cavan, approximately 100 km from Dublin. The R154 and R195 regional roads cross in the town's market square. As of the 2006 census the town's population stood at 2,226.

In recent years Oldcastle has grown, being an important destination for workers from Eastern Europe who come to work in the numerous industries, particularly furniture, bedding and victualling located in the area.

Oldcastle (Tecumseh) twinned with Oldcastle Co. Meath in 1999. There have been many visits made over the past ten years.  An official twinning declaration was signed at the 10th anniversary celebration in 2009 and is displayed in both town halls.

Frosinone, Italy

Frosinone is a town and commune in Lazio, central Italy, the capital of the Province of Frosinone. It is located about 75 km south-east of Rome close to the Rome-Naples Autostrada A1. East of Frosinone lies an early gothic Cistercian cloister.

Tecumseh officially completed the twinning process in 2009 with delegations from both communities visiting each other. Each year, in cooperation with the Ciociaro Club, delegations are shown the industry, tourism and residential life in the respective communities. The hopes are to learn from each other and develop strategic partnerships together.

Tecumseh, Michigan

One of the first three settlements in the Michigan territory. Tecumseh is conveniently located within 25 minutes of Ann Arbor, 30 minutes of Jackson, 15 minutes of Dundee and only 30 minutes from Toledo, Ohio.

Tecumseh officially completed the twinning process January 19th 2013 with delegations from both communities visiting each other. The hopes are to learn from each other and develop strategic partnerships together.