Mother Tucker, or Mama Lisa as she was affectionately called by the workers, was a remarkable woman who played a vital role in the construction of the Rideau Canal in Ottawa. Born in 1789 in Ireland, she immigrated to Canada with her husband John Tucker, a carpenter, in 1816. They settled in Bytown, a small town that would later become Ottawa, and opened a boarding house near the canal site.

Mama Tucker was known for her kindness, generosity, and culinary skills. She cooked for Colonel By's men, who were mostly Irish immigrants like herself, and served them hearty meals of stew, bread, and tea. She also provided them with comfort and care, tending to their wounds, illnesses, and grievances. She was a mother figure to many of the workers, who often faced harsh conditions, discrimination, and danger while building the canal.