Possibly meaning “one strength” derived from Irish óen “one” and gus “force, strength, energy”. Aonghus (sometimes surnamed Mac Og meaning “young son”) was the Irish god of love and youth. The name was also borne by an 8th-century Pictish king and several Irish kings.
From a surname that was derived (via the place name Cuinchy) from the personal name Quintus. A famous bearer was John Quincy Adams (1767-1848), sixth president of the United States, who was born in the town of Quincy, Massachusetts. Both the town and the president were named after his maternal great-grandfather John Quincy (1689-1767).
People with the name Calvino have a deep inner need for quiet, and a desire to understand and analyze the world they live in, and to learn the deeper truths.