Michael Davidson is celebrating his 40th birthday and completion of 15 marathons by asking for donations to the Fisher Center for Alzheimer's Research Foundation in memory of his grandmother Nancy who died of Alzheimer's in 2006. Nancy immigrated from Ireland in 1937 and raised six children while running a pub in New York. As Michael's first employer and someone who had a big influence on him while he grew up, he wants to honor her memory through fundraising. Donations can be made online at fundly.com/15in40 and will support the Fisher Center's research into finding a cure for Alzheimer's.