Maybe [name_m]Kevin[/name_m]'s Middle or last name would work? I am not fond of [name_m]Duncan[/name_m] [name_m]Kevin[/name_m] but I like the Honoring your father aspect. My Dads name is actually his mothers maiden name so maybe something like that would sound nice.
My Dad’s last name is very [name_m]German[/name_m] and not a super workable middle name. It will really sound like a hyphenated last name. His middle name is [name_m]Normand[/name_m] after his grandfather, who he didn’t really know. A clever berry suggested chopping [name_m]Kevin[/name_m] in half and using [name_m]Vin[/name_m]. I don’t think [name_m]Duncan[/name_m] [name_m]Vin[/name_m] sounds great though. It might be my only real option to use [name_m]Normand[/name_m] for a direct name of his.
I love [name_m]Duncan[/name_m] [name_u]Emmett[/name_u] and [name_m]Duncan[/name_m] [name_m]Oliver[/name_m]