No, it's a good thought...which I've already explored but without any luck! If it had been me, I would have altered it to Lennard if I felt I had to change it at all. The other alternative is Leonard but that is such a common surname, it is like looking for a needle in a haystack! The children were all British born and their mother was English. Only the father Ignaz had been born in Germany and he died in 1896. It's just that, to me, it looks very German and they may have felt sensitive about it. Having said that, my Dad and his mother lived through WW1 in rural Kent with that name and had no trouble...but my Grandma's family were local and she would have been known as a local girl. Ann