A.H.
If you like A names I like Augustus, and Alexander, Andrew - can be called by nicknames that don't start with A
I do think naming all the children with the same letter to be rather "precious". I know several people who came from families where children were named like that that uniformly disliked it (from annoyed to absolutely hated it). It makes labeling things with initials useless and diminishes the individuality of the children.