Evidentally John Reid (or Reed) was cowpoke"s real name. they never used it in the TV or radio series. It must have been in the novels- I believe Zane Grey created the character, famous Western novelist.
To understand the family relationships, go to the three parallel accounts of the women watching the crucifixion of Jesus :-
Ist account:-
Joh 19:25 KJV Now there stood by the cross of Jesus his...
Texas, I guess. Texas seems to have a five-pointed Star monopoly on Westerns, cowboys etc. the fact that other states had ranches and ranching- like Abilene, Kansas, which was a Cow Town=-is...