. >> guest: i find it ironic because when her daughter kathleen decide she's going to marry billy hartington during world war ii -- this is kids the effervescent child of rose and i think in many ways like her mother but oftentimes that creates conflicts between parents and children. so i think it was ironic that rose didn't seem to remember how in a sense she thwarted her parents wishes by marrying joe kennedy and kid was not to be denied and of course she did very billy hartington. sadly the marriage only lasted for four months and he was killed in europe after the invasion of 1944. >> host: lets talk about joe. joe gets a lot of credit for his family and he is at page or go figure and larger than life and even some of the sons gave him credit for spurring his family on to greatness but how did that marriage work because your book makes the point and you see a lot of it in the research you have done that rose was a partner and was a significant player especially in joe's absences informing the family. >> guest: i would say their marriage was built on love. there's no doubt about that. i th