check his tree
https://www.geni.com/family-tree/index/6000000006185921230
He has a father named Reinfred de Arundell, and a mother named Alice de Lanheme, who had a father named John de Lanherne.
He had a great grandfather also named named Reinfred de Arundell, also married to an Alice de Lanheme, who also had a father named John de Lanherne.
The dates are different, but the names and relationships are the same.
Coincidence, or a branch grafted on twice?
