[1] The family, originally called "Micault", had immigrated to England from France several generations earlier.
[2] The Micos were a merchant family: the composer's cousin was Sir Samuel Mico (1608–66), who settled in London by the 1630s, made his fortune in overseas trade to become an alderman of London and Master of the Mercers’ Company, and was knighted after the Restoration.
[2] Surviving documents record the handing over of the household instruments to Mico in 1608, including five viols (with bows), a lute, organ and virginals.
[1] While working for Petre, Mico adopted his employer's faith, converting to Roman Catholicism.
[2] None of Mico's consort works were published during his lifetime, but Christopher Simpson, writing six years after his death, named him as one of the best composers of fantasias.