Frederick
‘masculine proper name’
Lexical development traced from the Tamil root:
F. frédéric < G. friedrich < O.H.G. fridurih < Proto-G. frithu-rik ‘peace-rule’ < frithu- ‘peace’ + rik- ‘rule’ < rik < reg- < Tamil aracaṉ
Frederick
English words derived from Tamil aracaṉ connoting 'rule'