<p>Two members of the Kennedy US political dynasty, including a grand-niece of assassinated president John F Kennedy, were missing Friday after they went canoeing.</p>.<p>Kathleen Kennedy Townsend's daughter and eight-year-old grandson disappeared Thursday after boating on the South River in Maryland, Governor Larry Hogan told reporters.</p>.<p>An intensive search has been underway since Thursday.</p>.<p>"On behalf of the people of Maryland, I expressed our most heartfelt sympathies and prayers to her and to her entire family during this difficult time," Hogan said.</p>.<p>Kennedy Townsend, 68, is a former Maryland lieutenant governor, and the daughter of Robert F Kennedy, the onetime US attorney general in his brother's administration.</p>.<p>The iconic American clan has had more than its share of tragedy.</p>.<p>RFK was himself slain in 1968 as he campaigned for president five years after his brother's death.</p>.<p>In 1999 John F Kennedy Jr and his wife and sister-in-law died when the small plane he was piloting crashed off the Massachusetts coast.</p>.<p>Saoirse Kennedy Hill, a granddaughter of Robert F Kennedy, died of what was ruled an accidental drug overdose last year at age 22. </p>
<p>Two members of the Kennedy US political dynasty, including a grand-niece of assassinated president John F Kennedy, were missing Friday after they went canoeing.</p>.<p>Kathleen Kennedy Townsend's daughter and eight-year-old grandson disappeared Thursday after boating on the South River in Maryland, Governor Larry Hogan told reporters.</p>.<p>An intensive search has been underway since Thursday.</p>.<p>"On behalf of the people of Maryland, I expressed our most heartfelt sympathies and prayers to her and to her entire family during this difficult time," Hogan said.</p>.<p>Kennedy Townsend, 68, is a former Maryland lieutenant governor, and the daughter of Robert F Kennedy, the onetime US attorney general in his brother's administration.</p>.<p>The iconic American clan has had more than its share of tragedy.</p>.<p>RFK was himself slain in 1968 as he campaigned for president five years after his brother's death.</p>.<p>In 1999 John F Kennedy Jr and his wife and sister-in-law died when the small plane he was piloting crashed off the Massachusetts coast.</p>.<p>Saoirse Kennedy Hill, a granddaughter of Robert F Kennedy, died of what was ruled an accidental drug overdose last year at age 22. </p>