Knight of Garter

Well let's cross the rubicon and go from the Marian era to the Elizabethan one. Should change thing a lot. His rises was apparently near instatenous has apparently as he was elevated to the rank of Knight of Garter on the same month (source)  that Elizabeth was crowned queen. though as you can see he hardly was first only guy elevated by her. Though he was knight he only became part of the order of garter (he was in fact baron) around 1561, source. (I'm a little bit confuse on how all this work) All the other major knight order seem to be subsequent. Feel a bit weird.

Sorry if this is short, I can't find more about this.