Liam de Gaillimhe was the commanding officer of the USS Aotearoa from 2372 until its disappearance in 2373.
Liam de Gaillimhe was born in 2337.
In early to mid 2357, Starfleet Academy second year Cadet Liam de Gaillimhe met Daniel Radke, a first year cadet, and the two started a relationship. This relationship lasted until 2359, when de Gaillimhe graduated from Starfleet Academy and was transferred to his first assignment.
By 2372, Starfleet Command assigned the Aotearoa, with de Gaillimhe as commanding officer, to co-ordinate the Starfleet effort against the Myhr’an. (“Catalyst, Part Two“) De Gaillimhe contacted the USS Cantabrian crew when the Aotearoa arrived, and he ordered his crew to defend the Cantabrian while that crew beamed up the remaining prisoners at the Myhr’an internment camp. Both the Aotearoa and Cantabrian escaped thanks to de Gaillimhe’s actions. (“Two Hit, One Stone“)
De Gaillimhe revealed a secondary, covert mission he and his crew were on to Captain Noah Wrightson, Cantabrian first officer Elizabeth Singh and Daniel Radke: to stop the Treaty Killers at all costs. Starfleet Intelligence believed their next target was Radke.
De Gaillimhe came up with installing the tracking device in Radke so his whereabouts could be monitored at all times. When that plan failed — the Treaty Killers learned of the implant and used it to their advantage — de Gaillimhe removed the implant and used it as a distraction, flushing it and the Treaty Killers boarding party out of a cargo bay aboard the Aotearoa and into space. With Radke safely aboard the Cantabrian (still proceeding at maximum warp), de Gaillimhe ordered the Aotearoa to drop out of warp to appear to attempt to collect the implant — the Treaty Killers assumed this was Radke — and battle the Treaty Killers ship while the Cantabrian made its escape. (“White Flag“)
Liam de Gaillimhe and Daniel Radke met at Starfleet Academy in 2355 when de Gaillimhe and some friends were playing a game of football (soccer) and Liam unsuccessfully passed the ball, accidentally pegging Daniel, passing by, in the knee.
The two had a passionate, but often troubled, relationship.
After de Gaillimhe graduated the Academy in 2357 and was shipping out to his first assignment, he promised Radke their relationship was still on. He gave Radke a single red rose and a passionate kiss, vowing to return in December to accompany Radke on a skiing holiday in Switzerland. Daniel didn’t see him again until 2372. (Isolation“, “White Flag“)
De Gaillimhe met and married Anne de Gaillimhe sometime after 2357 and before 2372. Their marriage eventually ended in an amicable divorce, and Liam felt guilt at Anne‘s death at the hands of the Treaty Killers. Daniel Radke speculated de Gaillimhe’s quest to stop the Treaty Killers might, in fact, stem from an unconscious desire for revenge. (“White Flag“)