Eithne was born in Galway, Ireland where she worked in the restaurant industry. In 1989, she moved to Nantucket for a summer and never left! She worked at several fine dining establishments on island including Toppers at the Wauwinet, The Club Car, and Le Languedoc.

She began catering in 1998 and loved the event planning aspect of it. She was the floor manager for Catering by McRae for two years, before she and Mark launched Nantucket Catering Company in 2001.

Her twenty-two years of being an owner-operator of Nantucket Catering Company has gained her immeasurable experience and knowledge. She has an incredible working relationship with other vendors both local and off-island and her personable approach is one of her most noted attributes.

Mark and Eithne raised their daughters Michaela and Sinead on the island.