García Sánchez II of Pamplona

García Sánchez II (Basque: Gartzea II.a Santxez; died c. 1000), was King of Pamplona and Count of Aragon from 994 until his death c. 1000. He was the eldest son of Sancho II of Pamplona and Urraca Fernández and the second Pamplonese monarch to also hold the title of count of Aragon. Modern historians refer to him as the Tremulous, though this appellation likely originally applied to his grandfather, García Sánchez I of Pamplona.

Source: Wikipedia — https://en.wikipedia.org/wiki/Garc%C3%ADa_S%C3%A1nchez_II_of_Pamplona