Martin I (1356—1410), "the Elder", "the Humane", King of Aragon (1396 - 1410)), King of Sicily (1409 - 1410) was the last direct descendant in male line of Wilfred "the Hairy" , Count of Barcelona, to rule Aragon. He became the King of Sicily (as Martin II) after the death of his son, Martin I of Sicily, widower of Mary of Sicily.
See also:
Kings of Aragon,
Monarchs of Naples and Sicily