How will I know the name of my Guardian Angel and my igned Guardian Angel?

Angels are servants and messengers of God. They may at times intervene or ist in human affairs, but only by His will. Archangels are the chiefest among them. But no angel is at the beck and call of humans. If God sends an angel at any time into your life, you will not need to know that angel's name. The glory is supposed to be to God, not to the angel, which is a created being like yourself.