Moore was a Human farmer from Broken Bow, Oklahoma, in the 22nd century.
In 2151, Moore shot and seriously wounded Klaang, a Klingon courier, with a plasma rifle, after Klaang crashed his vessel on Moore's land while attempting to evade two Suliban soldiers. Klaang was subsequently transported to Starfleet Medical in San Francisco, setting into motion a series of events which led to the launch of the Enterprise NX-01 and the beginning of its historic mission of exploration. (ENT: "Broken Bow")
Farmer Moore was named after writer Ronald D. Moore, who had written many Klingon episodes during his time with Star Trek. ("Broken Bow" text commentary, ENT Season 1 DVD)
The character is not named in the script of "Broken Bow", which simply refers to him as a farmer. The same script also characterizes him as "middle-aged". Although the episode does not establish whether Moore had viewed any other aliens prior to his encounter with Klaang, the script specifies of Moore, "He's never seen an alien before." [1]
Farmer Moore was played by Ron King.