Bastard eigne
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In old English law
Bastard elder. If a child was barn of an. illicit connection, and afterwanis the parente intermarried and had another son. the elder was called "bastard eigne," and the younger, "mulier puisne," i. e., afterwards bom of the wife.
See 2 Bl. Comm. 248.