The law of succession, called tanaisteacht, or tanistry, is one of the most peculiar of the Brehon laws.
The customs of "gavelkinde" and "tanistry" were attended with the same absurdity in the distribution of property.
tanistry continued in force there until the beginning of the last century.
Freehold and leasehold, primogeniture and entail, took the place of tribal ownership and tanistry.
Notwithstanding the above decision, it is probable that a description of tanistry and gavelkind does not exhaust the subject.