Beatrice and
Bertha! We did use
Beatrice; she didn't have a mn, but luckily we liked the name and loved the original owner.
Bertha, an Afrikaans lady who died very young, was
Bertha Maria, and our first daughter had
Beatrice Mary as her mns. We thought it worked well. However, looking at grandfathers, we'd have been stuck with
Cecil (I'd use
Cecily willingly!) and
Ernest Fraser. There are lots of
Fraser people, some with it as a fn, some as a mn, so we decided against it though we do like it. And
Ernest and
Cecil are just too dated. (If we lived in a German-speaking place, we'd have considered
Ernst, but we don't and didn't.)