Abbreviations & Acronyms
abt. — about (meaning “within a few years of”)
aft. — after (meaning “on or after this date”)
atDNA — autosomal DNA is DNA from one of our chromosomes located in the cell nucleus. It generally excludes the sex chromosomes. Humans have 22 pairs of autosomal chromosomes and a pair of sex chromosomes.
bef. — before (meaning “on or before this date”)
bet. — between (meaning “on or between these dates”)
BGTF — beyond genealogical time frame
BHTF — beyond historical time frame
GGF, GGM, GGP — great-grandfather, great-grandmother, great-grandparent
MDKA — Most Distant Known Ancestor, the earliest known, documented ancestor on a specific genealogical line
MRCA — Most Recent Common Ancestor between two people in the genealogical time frame (e.g. NOT Adam and Eve!).
mtDNA — The genetic material found in mitochondria. It is passed down from females to both sons and daughters, but sons do not pass down their mother’s mtDNA to their children.
NN — Latin, nomen nescio (“I do not know the name ”) is used for unknown given names and surnames (e.g. John NN or NN Doe).
unk. — unknown
Y-DNA — A Y-DNA test looks at male inherited Y-chromosome DNA.
Remove — change one’s home or place of residence by moving to (another place)—“He removed to Wales and began afresh”.