Baby Name Poll

Hi i’m Cora. Here’s my situation right now. Me and my now ex-husband are going through a divorce as of now. I am currently seven months gone with a little boy. Me and my ex-husband already have two daughters Bryony (9) and Isabelle (6) who he has made no effort to see and he has made clear he wants nothing to do with our unborn son (he must be too concerned over his new family!). We have always agreed to called our first son Owen Thomas, however I feel using that name would maybe be clinging onto the past. Should I still call my son the name we both agreed on, or change it to a name that has no connection to the family we nearly had? Cora