I've written the petition for a grant of arms for a Scottish ancestor of mine and have begun the arduous task of assembling the required proofs (and the even longer task of amassing the funds to pay the requisite fees).

Since the line of direct inheritance branches far from myself, I know I'll have to petition a matriculation of my ancestor's arms with suitable marks of difference. It only just occurred to me, however, that I am the first son in my family. My father is still alive (and I hope that he will be for a long while yet) and is an incredibly practical man that would have no interest in matriculating arms for himself. Which leads to my question - would it be possible for me to request the arms in his behalf (which my son and I can then use with the appropriate labels)?

I'm not sure exactly how one would go about it and I have thus far been unable to find anything on the subject.

It would also be nice to know in the event that I have another son - I think a matriculation of arms with a fitting signet ring would make for a very nice graduation present when the time comes.