[name_f]Heidi[/name_f] is gorgeous 
[name_f]Love[/name_f] [name_f]Matilda[/name_f] & [name_f]Anne[/name_f] as sister names for [name_f]Matilda[/name_f] very cottagecore and whimsy. I tend to lean more European when I think of sisters for [name_f]Heidi[/name_f] names like [name_f]Ingrid[/name_f], [name_f]Astrid[/name_f] & [name_f]Greta[/name_f] really appeal to me as [name_f]Heidi[/name_f] sister name.
[name_f][/name_f]Other ideas could be…
[name_f][/name_f][name_f]Flora[/name_f], [name_f]Verity[/name_f], [name_f]Elspeth[/name_f], [name_f]Freya[/name_f], [name_f]Ruby[/name_f], [name_f]Frances[/name_f], [name_f]Iris[/name_f], [name_f]Olive[/name_f], [name_f]Martha[/name_f], [name_f]Opal[/name_f], [name_f]Felicity[/name_f], [name_f]Ivy[/name_f], [name_f]Blythe[/name_f], [name_f]Bronwen[/name_f], [name_f]Norah[/name_f], [name_f]Clara[/name_f], [name_f]Faye[/name_f], [name_f]Tess[/name_f], [name_f]Romilly[/name_f], [name_f]Ottilie[/name_f] & [name_f]Alba[/name_f].
[name_f][/name_f]From your boys in all honestly this list isn’t pulling at my heart strings. I think [name_m]Lyle[/name_m] is unexpected and clunky cool names with a [name_m]Lyle[/name_m] vibe that may appeal could be [name_m]Clyde[/name_m] & [name_m]Lachlan[/name_m]. I get the appeal of [name_m]George[/name_m] however he’s never been a favourite of mine and finally [name_m]Harold[/name_m] feels too clunky to be a sibling to [name_f]Heidi[/name_f].
[name_f][/name_f]Other ideas could be…
[name_f][/name_f][name_m]Otto[/name_m], [name_m]Ambrose[/name_m], [name_m]Blaise[/name_m], [name_m]Flynn[/name_m], [name_m]Niall[/name_m], [name_m]Otis[/name_m], [name_m]Tristan[/name_m], [name_m]Rafferty[/name_m], [name_m]Rupert[/name_m], [name_m]Magnus[/name_m], [name_m]August[/name_m], [name_m]Wilfred[/name_m], [name_m]Jasper[/name_m],
[name_f][/name_f][name_m]Shepherd[/name_m], [name_m]Felix[/name_m], [name_m]Isaac[/name_m], [name_m]Monty[/name_m], [name_m]Asa[/name_m], [name_m]Tobias[/name_m] & [name_m]Gideon[/name_m].