Ds1 has the name of my favourite singer, which happens to be a family name too.
DD1 has the same middle name as me & my mum, which was also my mothers grandmothers middle name.
DS2 has a family name which is shared between my brother, dad & pop.
DD2 has my MIL's name as her middle name. Mil passed away in 2002.
DD3 has my mothers nickname as her middle name. My mum has been called this by her aunts & siblings her whole life.