Sutta request: dedication of offerings in another ones name This is a request for sutta references.

I'd like to know the sutta's that describe how one can dedicate offerings in the name of a dearly departed one so that (s)he can, hopefully, have a better rebirth.
Does anyone know of sutta's describing dedicating of offerings?

Thanks.
This being a gift of devoted and faithful ancestors of yours, having it once dedicated that you might be able to nourish and grow to a better with it:

The most common, (guessing Nyom Medhini asked with kusala and devoted heart) is: 7. Tirokudda Kanda — Hungry Shades Outside the Walls

If further understanding is searched anonymously like a hungry shadow, may it be understood to be dedicated toward the many donors lost ancestors behind the walls: [Q&amp;A] Hungry ghosts and food offerings to the dead and Sharing merits - Freude teilen (pattanumodana &amp; pattidana) [Forum Guide]

Common one tries to reach ones departed ancestors in states where they could rejoice with ones deeds and so it might be that they find better rebirth. That is why there are made certain funeral fests and long ceremonies. The dedication toward the Sangha "secures" that they might meet the Sangha in other existences and with it the Dhamma at later time, and by nourishing it"s existence, making each other familiar, Nissaya and possible meeting increases. 

Dedication for and offerings toward the ancestors is one of the laymans duties, if wishing after good and better. 

Good if being aware of the many goodness many did by sacrifices for you and use it for good and best, never hurting or harming, misguiding others and become another of the Sages step by step. Anumodana! and Mudita.

So powerful is this,
    the accomplishment of merit.
Thus the wise, the prudent,
    praise the fund of merit
    already made.

In the case one or another has a hard to nourish and swallow it: Not having done merits in the past, even if given by ones previous beloved, one would be incapable to receive/take it. Something to think about if possible to do.

(Note that it is not given for trade, exchange, stacks, although hungry ghosts are incapable even for such, but for getting out of bondages)