English

grandrelation

From grand- + relation.

Middle English

Proto-Indo-European *bʰer- ‘to bear, carry’

…

Latin relātus ‘related’

Latin relātiō ‘carrying or bringing back’

Anglo-Norman relacioun

Middle English relacion

Today it means

noun A member of one's family from whom one is separated by two generations.

Language periods are conventional ranges, not dates for this word.

Etymograph / grandrelation