Grennan is an Irish surname. It may be of Norman origin, from the French name Grenan. Notable people with the surname include: *

Eamon Grennan Eamon JR Grennan (born 13th November 1941) is an Irish poet born in Dublin, Ireland. He attended University College Dublin where he completed a BA 1963 and an MA 1964. He has lived in the United States, except for brief periods, since 1964. He ...

(born 1941), Irish poet *

Justin Grennan Justin Grennan is an American singer who is originally from Enumclaw, Washington,Andrew Matson"Enumclaw's Justin Grennan is on NBC's "The Voice" UPDATE: and so is Tacoma's Vicci Martinez" ''The Seattle Times'', 6 May 2011 and now resides in Glen ...

(born 1978), American singer * Keith Grennan (born 1984), American football player *

Mike Grennan Mike Grennan (November 29, 1950 - May 12, 2009) was an American curler and 1988 national men's champion. Curling career In 1988 Grennan played lead on Doug Jones' national champion team; they went on to finish in tenth place at the World Champ ...

(1950-2009), American curler * Tom Grennan (born 1995), English singer and songwriter * Winston Grennan (1944–2000), Jamaican drummer *

Jacqueline Grennan Wexler Jacqueline Grennan Wexler (born Jean Marie Grennan; August 2, 1926 – January 19, 2012), commonly known as Sister J, was an American Catholic religious sister who rose to prominence when she, as President of Webster College, strove to convince ...

(1926–2012), American academic administrator

See also