Going by the version in the DT:

a) Matty Groves - for sleeping with a married woman?

I have no objection to his doing that.

b) Lord Donald's wife for comitting adultary?

If this was actually love, and not just boredom, I would have no problem with that. However, if she actually loved the guy, she could have either run away, or gotten involved in the fight, possibly changing the outcome drastically.

c) The little page for telling on them?

Is a "sundt" the same as page?

I smell power plays.
The way it looks here, the guy was merely gossipy, power-seeking, and vindictive towards women.

d) Lord Donald for murdering them both?

Guys get really possesive anyway, and in that time, it was expected/allowed/permitted for them to act out on those feelings. I hate it when guys get like that.
I do blame him for not making sure his wife had something to do while he was away.
The line "never heard to speak so free" suggests that she was just a trophy wife, expected to do nothing except sit and embroider baby clothes... It's really hard not to think of taking a lover when you're not in a true partnership.

e) All of the above

No. Another vote for "Society."

I have no problem with adultery. I have a problem with promiscuity, but mainly on grounds of health.
If the Lady had been allowed any choice in her future, she might not have been married when she met Matty. If there had been true respect in her relationship with the Lord, none of that would have happened. If the general climate had been set up to respect a woman's right to her own body, the sundt wouldn't have gotten any payoff from snitching.
And if the society had been set up with freedom and equality, there wouldn't have been a sundt to snitch...

There was an Irish queen sometime far in the past, who wrote a letter to a nearby king, talking about treaties and crops and stuff like that, and at the end of it, she invited him, very casually, to "share my thighs." That very phrase. I think she was married already, too.

Guys became very possesive of women when they discovered that they actually had something to do with children being born. Paternal lineage became more important than maternal lineage. Men began to trade women, as if they were only breeding animals. Men began to belittle women's minds, creativity, and accomplishments. In order to cover up what they were really doing, they called it 'protection', and made it unsafe for a woman to walk alone.

I blame society, although all the individuals in the song have some blood on their hands for their actions.

~*hesperis*~