Lacy's Canal was named after Hugh de Lacy, Lord of Meath, who lived in Mullingar, County Westmeath, Ireland in the 12th century. It was constructed in the 18th century and links the town of Mullingar to the northern shore of Lough Ennell. It starts at the rear of the Lynn Industrial Estate and enters Lough Ennel about 1.5 km south of Butlers Bridge. It is crossed by both Butlers Bridge and the Joe Dolan Bridge.  
- Coghlan, Finian (August 20, 2010). "Drive over Joe - Republic's longest bridge opens to traffic". Mullingar Advertiser. Retrieved 20 August 2010.
- Coghlan, Finian (July 30, 2010). "Nation's longest bridge to be named after Joe". Mullingar Advertiser. Retrieved 20 August 2010.
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