Fraternal twin names flow & saint names

Pregnant with fraternal twins, and despite the surprise, we want to wait to know the sex. Husband and I went to have 2 sets of names for each sex with the middle name being a saints name. We have Xavier and Lucian as boys’ names, with Gabriel and Vicente as their middle names. However, we are unsure which combination of names goes best. For girls, we have Helena and Aurora with no idea which saints call to us or flow well with those names. We do have a typical 3 syllabled Spanish last name beginning with G. Thank you in advance!