Cornish teylu

← Proto-Celtic *tegoslougom (inherited)

← Proto-Celtic *tegos (inherited)

← Proto-Celtic *slougos (inherited)

← Welsh teulu (cognate)

← Irish teaghlach (cognate)

← Scottish Gaelic teaghlach (cognate)

← Manx lught thie (cognate)

← Cornish chi (affix)

← Cornish lu (affix)

→ Welsh teulu (cognate)