I don’t mind [name_m]Asa[/name_m] [name_m]Seamus[/name_m] or [name_m]Asa[/name_m] [name_m]Shepherd[/name_m], considering both middles start with a SH sound.
[name_f][/name_f]But here are some other possibilities…
[name_f][/name_f][name_m]Asa[/name_m] [name_f]Sydney[/name_f]
[name_f][/name_f][name_m]Asa[/name_m] [name_m]Siegfried[/name_m]
[name_f][/name_f][name_m]Asa[/name_m] [name_m]Sullivan[/name_m]
[name_f][/name_f][name_m]Asa[/name_m] [name_m]Salvatore[/name_m]
[name_f][/name_f][name_m]Asa[/name_m] [name_m]Scott[/name_m]
[name_f][/name_f][name_m]Asa[/name_m] [name_m]Sean[/name_m]