Findings:
- Fychan (user)
- Ioan Gruffudd
- Gruffudd ap Cynan
- Caradog ap Gruffudd
- Gruffudd ap Maredudd ab Owain
- Gruffudd ap Rhys ap Tewdwr
- Gruffudd ap Gwenwynwyn
- Llywelyn ap Gruffudd
- The House of Gruffudd ap Cynan
- Rhys ap Gruffudd
- Wales after Gruffudd ap Llywelyn
- Historia Gruffud vab Kenan
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