Janico Dartasso was a native of Navarre in the Western Pyrennes. He came to Ireland in 1394 as part of the expeditionary force which was led by King Richard the second. He was rewarded land in Ireland for his excellent service against the Irish in Leinster and for his loyalty to the King. The manors that he was granted was South of the City of Dublin and included Kindlestown, Killincarrig, Kilmartin, Killoughter, Ballyronan (west of Kilcoole) and Whitestoun. When Richard the second returned to England in May 1395, Dartasso returned with him. In 1401 he was recorded back in Ireland as Constable of Dublin Castle. He was later granted the Castle of Trim. In 1402 he was the Justice and supervisor in Louth and Meath. He also became the admiral of Ireland in 1404. His eldest son was married to the daughter of Eoin Mor.
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