Iorwerth Drwyndwn Ap Owain Gwynedd & Margaret 
Iorwerth Drwyndwn and Margaret were married in a religious ceremony.1 They had a son named Llywelyn Fawr "Der Grosse" Prinz.
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Children
Llywelyn Fawr "Der Grosse" Prinz von Wales
Llywelyn Fawr "Der Grosse" Prinz was born in 1173.1 He died at the age of 67 in 1240.1
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