High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Richard Michael Linnehan is an American veterinarian and a NASA astronaut. Linnehan was born September 19, 1957, in Lowell, Massachusetts, and was raised by his paternal grandparents, Henry and Mae Linnehan. He grew up in the state of New Hampshire. He is single and enjoys various sports, outdoor activities and natural history. His sister, Colleen, resides in Nevada.