I concur with Mr Y. Being baptised in two names is without doubt an irregularity. Such a "double naming" at an Orthodox baptism is often the result of an impasse between, say, the parents and the Godparents, where each refuses to budge from the name each has chosen. There is nothing in Orthodox Tradition which allows this, both in practice, nor in the text or rubrics of the baptismal service. Yet, understandably, in extreme situations, some priests have seen it fit, in the spirit of economia, to baptise individuals in two names.
One should only have one baptismal name, therefore one patron saint. However, there is NOTHING which should stop an Orthodox Christian from praying to, or having a particular devotion to, a saint or saints who are not their baptismal patron saints.