Honouring my father..middle name help

My father passed away when I was a child and I would like to use his name in some way for my daughter. His name was Gerald (Jerry) Lawrence. My sister just had a baby boy and used Jerry so I don't want to also use that. We are pretty much set on the first name being Katarina. Please let me know if you have any ideas for a great middle name other than what I've mentioned. My husband's ex's name was Lauren so needless to say that's not an option. I tried to use variations of Laura. Laurence being the female version of Lawrence. Then I thought maybe use a J name? My parents almost named me Jessica but didn't so if I use a J name that will probably be it. I'm not too keen on names like Geraldina, etc. Thanks for your help!