interparental
multiparental
olds
dukes
old
diparental
coparental
parental unit
interfamilially
interfamily
amphigonous
brother
filioparental
interfamilial
intrafamilially
multiparent
uterine sibling
mama
biparental
in loco parentis
eldest
brood
second cousin
sesquiple first cousin
irregular double first cousin
fam-bam
mom and them
fambly
folk
fam
cognati
paternal cousin
half
blood brother
kindred
maternal cousin
folks
parentally
Medici
sister
first cousin once removed
grandfather
second cousin once removed
brother german
intersibling
great-grandparent
merparent
half blood
grandmother
co-parent