Abel

Father
Adam
Mother
Eve

Citations

17) And she again conceived and bare his brother Abel. And Abel hearkened unto the voice of the Lord. And Abel was a keeper of sheep, but Cain was a tiller of the ground.
20) And Abel, he also brought of the firstlings of his flock, and of the fat thereof. And the Lord had respect unto Abel, and to his offering;
26) And Cain was wroth, and listened not any more to the voice of the Lord, neither to Abel, his brother, who walked in holiness before the Lord.
27) And Adam and his wife mourned before the Lord, because of Cain and his brethren.
32) And Cain went into the field, and Cain talked with Abel, his brother. And it came to pass that while they were in the field, Cain rose up against Abel, his brother, and slew him.
33) And Cain gloried in that which he had done, saying: I am free; surely the flocks of my brother falleth into my hands.
34) And the Lord said unto Cain: Where is Abel, thy brother? And he said: I know not. Am I my brother’s keeper?
35) And the Lord said: What hast thou done? The voice of thy brother’s blood cries unto me from the ground.
36) And now thou shalt be cursed from the earth which hath opened her mouth to receive thy brother’s blood from thy hand.
38) And Cain said unto the Lord: Satan tempted me because of my brother’s flocks. And I was wroth also; for his offering thou didst accept and not mine; my punishment is greater than I can bear.
2) And Adam knew his wife again, and she bare a son, and he called his name Seth. And Adam glorified the name of God; for he said: God hath appointed me another seed, instead of Abel, whom Cain slew.
3) And God revealed himself unto Seth, and he rebelled not, but offered an acceptable sacrifice, like unto his brother Abel. And to him also was born a son, and he called his name Enos.
From the blood of Abel unto the blood of Zacharias, which perished between the altar and the temple: verily I say unto you, It shall be required of this generation.
22:4) I saw (the spirit of) a dead man making suit, and his voice went forth to heaven and made suit.
22:5) And I asked Raphael the angel who was with me, and I said unto him: 'This spirit which maketh suit,
22:6) whose is it, whose voice goeth forth and maketh suit to heaven ?'
22:7) And he answered me saying: 'This is the spirit which went forth from Abel, whom his brother Cain slew, and he makes his suit against him till his seed is destroyed from the face of the earth, and his seed is annihilated from amongst the seed of men.'
The story of Cain and Abel. Contains some interesting features. Cain's sacrifices are rejected (fail to be consumed by fire from heaven) because he gives the poorer pieces to the Lord. Cain then seeks an excuse to kill Abel. The actual event occurs as a dispute over Abel grazing his flocks on Cain's fields. Abel was doing this intentionally it seems, because Cain had been stealing Abel's sheep for food and clothing.
There is a June 7 1966 entry, apparently authored by Alvin R. Dyer which reads:

The sacredness of Far West, Missouri, is no doubt due to the understanding that the Prophet Joseph Smith conveyed to the brethren, at these early times, that Adam-ondi-Ahman, the place to which Adam and Eve fled when cast out of the Garden of Eden, is where Adam erected an altar unto God, and offered sacrifices, and that Far West was the spot where Cain killed Abel.

This, information, tends to explain why the Lord declared Far West to be a holy consecrated place; and no doubt explains why Satan claimed that place as his own, as it was here that he entered into a covenant with Cain, resulting in the death of Abel the first of mortal existence upon this earth.

Philo tells of Cain and Abel's birth, focusing on Cain's birth, and gives some detailed exegesis of themes this suggests.
Philo tells of Cain and Abel's birth, focusing on Abel's birth, and gives some detailed exegesis of themes this suggests.
Describes that Abel's name means "referring to God"
He gives Abel's name to mean "sorrow".
Of Abel's blood, it was said that Cain's hands were stained by the blood; that he could not wash it away; and that this was the mark that was set upon Cain. It was also said that the earth rejected his burial, and would not accept him until after Adam died. It was said that Abel's body lay undecaying, and the blood fresh, until that time.
Old traditions seem to most plausible suggest that Cain cut Abel's throat. Points out that Joseph Smith's expanded details regarding Adam, Cain, and Abel have an unlikely amount of correlation with apocryphal texts he didn't have access to.

Notes

While Philo describes Abel as having the meaning "referring to God", modern commentators tend to give the name a meaning along the lines of "breath" or "vapor" in Hebrew, since it is composed of the same 3 consonants, H-B-L (the Hebrew source material did not record vowels). However it may rather be derived from an Assyrian word "ablu", meaning "son".

Cross-References