Family names are our theme.

DS1 was named after the first person in the family to come to Australia (in the First Fleet as a convict). His middle name is the same as my DH's middle name (which is the same as DH's grandfathers middle name).

DS2 was not intentionally named after family, it was just a name I liked but there are family members with it as a middle name. His middle name is the same as my FIL and BIL.

If we have another one, we will be naming him (or her) after my side of the family (but my sister has pretty much covered our side as her ex-DH didn't care about middle names).