Richard m. Old High German rih 'ruler' + Old Saxon hard, Old High German hart 'strong, hard'.
The name of a 5th C saint, an 8th C English saint, 12th C king of England, a 12th C Italian saint, a 12th C English saint, a 13th C king of Germany, a 13th C English saint, a 14th C king of England, a 15th C king of england, and three 16th C English saints.
The English diminutives Dicon, Dik, Dikon, Dycon, Dyk, Dykun, and Hick are witnessed in 1379 in the relational bynames Diconson (WRYPT1 p. 15), Diksoñ (WRYPT1 p. 31), Dikonsoñ (WRYPT1 p. 295), Dyconsoñ (WRYPT1 p. 10), Dykmañ (WRYPT1 p. 134), Dykunsoñ (WRYPT1 p. 150), and Hicksoñ (WRYPT1 p. 26).