Senana ferch Caradog (c.1198–1263) was the wife of Gruffudd ap Llywelyn Fawr (1198–1244).
Senana's full name was Senana ferch Caradog ap Thomas ap Rhodri ab Owain Gwynedd therefore Owain Gwynedd was her great great grandfather, although she came from an illegitimate line.
He was imprisoned to ensure the safety of his father's chosen heir Dafydd ap Gruffudd was the first born son but he was considered illegitimate.
Initially negotiations between Henry and Senana went well, both parties agreed to the terms and a charter was signed to release Gruffudd and their son Owain Goch ap Gruffydd.
In exchange for this pardon Henry III would receive six hundred marks and an additional three hundred mark every year if Gruffudd gained the lands he would have received from Llwelyn's estate when Llwelyn died.