She is the sister of Rio 2016 Olympian Sinead Jennings .
Caitriona Jennings -- Caitriona Jennings is an Irish long distance runner who competed in the marathon at the 2012 Summer Olympics in London , United Kingdom .
Caitriona Jennings is the long distance runner of Rio 2016 Olympian Sinead Jennings .
Caitriona Jennings -- Caitriona Jennings is an Irish long distance runner who competed in the marathon at the 2012 Summer Olympics in London , United Kingdom .