Kieran Duffy

Kieran Duffy was a Human in Starfleet.

As of 2365, he was a lieutenant (j.g.) aboard the USS Enterprise-D, in engineering (TNG episode "Hollow Pursuits"). During his time on the Enterprise, he struck up a romantic relationship with fellow crewmate Sonya Gomez. After about a year, Gomez accepted a transfer to the USS Oberth, and broke off their relationship. (SCE eBook Invincible)

By 2375, Duffy had been transfered to the Starfleet Corps of Engineers, serving aboard the USS da Vinci under Captain David Gold and Commander Salek. (SCE eBook War Stories) Following the death of Salek, Gomez was assigned as new first officer, and she and Duffy resumed their romantic relationship shortly thereafter.

In 2376, Duffy proposed to Gomez, but he was killed during a mission to planet Galvan VI before she could give her answer. (SCE eBook Wildfire)