Am I Being Petty or Is It Weird?

So my husband had an idea for our twin’s (B&G) middle names. Our 18 month old shares a middle name with my husband’s younger brother. Because of this, he thought we could use his older brother’s & his sister’s middle names for each of the twins’ middle names. It’s a nice thought except… his sister’s middle name is also his ex’s name. Now he hasn’t seen or spoken to this gal in over 15 years, but it still seems icky to me. I wouldn’t want to use my ex’s name for my little boy either, even a middle name. This hasn’t caused a fight or anything; my husband does understand. I just wanted to get other’s takes on it.