I am another woman who kept her name after marriage, and my husband and I decided our children would have my last name. (His last name is their middle name.) So far we have had zero problems. I do like having the siblings with the same last name - if I were in your situation I would continue with the naming pattern you have already established, and find a nice way to honor your DH's dad in a different way.
7/7/09 at 5:29pm