Harlan was born the youngest child of Lord Guncer Sunglass by his second wife. His two sisters were fifteen and twenty years older than him, and the eldest, Tysha , had been expected to inherit Sweetport Sound upon her father's death, with the Lord already being forty at the time of Harlan's birth.
Lord Guncer died when Harlan was nine, leaving the boy in charge of the Sunglass lands. Harlan's Lady mother Rylene Bar Emmon and his uncle Wyman Sunglass served as regent and castellan respectivly. Harlan became a quite serious, kind and quietly religious boy, who has spent most of his life a Lord.
The now thirteen year old Lord was present for the Tourney at Harrenhal with his mother. He left the mainland soon after as hostilities broke out.
Upon the outbreak of the War of the False King, he returned with his mother to Sweetport Sound where he has remained since.
Guncer Sunglass - Father (deceased)
Rylene Bar Emmon - Mother
Tysha Sunglass - Eldest Sister
Rhaelle Sunglass - Elder Sister (deceased)
Ryman Sunglass - Uncle
Wyman Sunglass - Uncle
Marei Bar Emmon - Maternal Grandmother