Dave Grohl and his mom have been making the talk show scene promoting her rock star moms book, From Cradle to Stage. Last night on Stephen Colbert they talked about Dave's school days and how Kurt Cobain's death changed their relationship. Dave's mom went to Boardman High School. Her parents met while her dad was building the Mosquito Lake Dam. Dave's dad and his second wife lived in Howland until he died in 2014.