Heraldic Device - The Crow

I have mentioned that I'm working on my last name and then the device I'd like to register when I get everything together. Now, Tobin is a common Irish last name during my century in Ireland. And since Masatsugu's real name is Tobin, there is something cool about using it. However, Una Tobin by itself doesn't flow well. Una O'Tobin is only slightly better.

On my device I was thinking of using Oak Leaves as that ties to the history of the Tobin family. Then I was thinking of a Phoenix since I feel like I'm on my second life, after escaping some nasty metaphorical flames. However, in researching the mythological beasts were much less common than the every day creatures. So, now I'm actually thinking of a crow. I'm reading two sources that make me feel a sense of kindred spirit with it.

Birds in Celtic Lore:

"Crows and ravens were birds of death, because of their scavenging habits, and the Irish war goddesses with whom crows are associated prophecy death, disaster, and defeat for those to whom they appeared."

Medieval Bestiary:

"Crows live a long time, and are monogamous. If the male crow dies, the female will never take another mate (compare this to the story of the turtledove). Crows take responsibility for feeding their offspring, and escort their young in flight. The crow's voice predicts rain, and the crow is said to be able reveal ambushes and foretell the future. Crows lead flocks of storks when they cross the sea to Asia. When the crow finds a corpse, it first pecks out the eye."

I have a lot of experience with death and disaster. Referencing the first. Let's just say there is a bit of an inside joke for me by using this.

For the second reference, I'm a mom so definitely escort my young through life.

So then I was playing with what it might look like, Sable background, silver Chevron, oak leaves and crow. Now, I know these may not be the "real" heraldic symbols of these items. I'm just playing and seeing how I like it.

What are your thoughts