Haplogroup R1a is believed to have originated 19 to 26 kya
among the northern and eastern Proto-Indo-European language speakers in Eurasia.
Its defining SNP is M420.
Its parent is R1 (SNP: M173).
Its children are subclades R1a1a1 to R1a1a8 (various SNPs).
It is a sibling to R1b (SNP: M343).
It is most frequent today in eastern Europe and central Russia, with
significant presences in Scandinavia and Iceland. Pertinent to the Taylor
surnames is that it may have been carried to Great Britain by Germ,ainc
immigrants ("Anglo-Saxons") beginning about 400 AD and by Norse settlers
("Vikings") beginning about 800 AD.