AdvertisementSupporting A Spouse With Alzheimer's: 'I Don't Get Angry Anymore'March 07, 2015Rebecca HersherfacebookEmailGreg and Mary Catherine O'Brien with their kids, at daughter Colleen's marriage to Matt Everett last August. Greg has early-onset Alzheimer's. From left, Brendan O'Brien, Greg O'Brien, Colleen O'Brien, Matt Everett, Mary Catherine O'Brien, and Conor O'Brien. (Courtesy of Greg O'Brien)