
The Sechtae (Old Irish for "Heptads": xviii ) is a collection of sixty-five heptads (mnemonic lists of seven) on various subjects in early Irish law. It is among the longest and most wide-ranging sources for early Irish law.
The Sechtae is the ninth text in the Senchas Már.
The Sechtae is only preserved in a complete form in one manuscript (Bodleian Library MS Rawlinson B 487),: 34 though Rudolf Thurneysen refers to the quality of this manuscript as "very poor".: 58 Portions of the Sechtae or quotes from it are preserved in several other manuscripts.: 291
In early Irish legal commentaries, the Sechtae is referred to as na sechta ("the sevens").: 291
The Sechtae is among the longest surviving texts of early Irish law.: 2 It is the ninth text of the collection of legal texts called the Senchas Már, placed at the beginning of the middle third of that collection.: 243 The compilation of the Senchas Már is generally dated between the late 7th and early 8th century CE.: 33 It is not clear whether law texts like the Sechtae were written by lay or clerical authors. D. A. Binchy argued the permissive divorce law described in Heptad III was suggestive of a lay author.: 233
The Sechtae comprises sixty-five heptads. These heptads are mnemonic lists of seven corresponding to a legal subject matter (for example, a list of seven places where battles could not be fought), occasionally expanded to eight. The unusual breadth of the subject matter covered in the Sechtae has been commented on.: 34 : 233 Rudolf Thurneysen deemed them "especially valuable [for the study of Irish law] because they touch on much which is not dealt with in other law texts".: 57
Groups of three (triads) and of seven (heptads) are common in Irish legal texts.: 233 Seventeen additional heptads are known from works other than the Sechtae. These heptads are printed as a sequence in Ancient Laws of Ireland, under the name "Additional Heptads", though they never appear in such a sequence in manuscripts.: 291–292 Kelly proposes a Christian origin for the heptad, given the significance attached to the number by Jewish and Greek traditions.: 33
Scholars have discussed various heptads individually in order to clarify features of early Irish law.: 292 Eoin MacNeill (1923) translated Heptads XII through XV in a discussion of the law of status;: 292 Rudolf Thurneysen (1925) discussed XXV in the context of the legal text Cóic Conara Fugill: 47 and (1928) discussed XXX and LXV in the context of the law of surety;: 47–54 Binchy (1938) discussed XXV in the context of sick-maintenance law;: 86–87 Liam Breatnach (1989) discussed I and II in the context of legal disqualification;: 31 and Charlene Eska (2022) discussed LXIV in the context of the law of lost property.: 33
The following is a translation of Heptad XV, dealing with the honour-price of women:
There are seven women in Irish law who are not entitled to payment or honour-price from a person: a woman who steals, a woman who satirizes every class of person, a chantress of tales whose kin pays for her lying stories, a prostitute of the bushes, a woman who wounds, a woman who betrays, a woman who refuses hospitality to every law-abiding person. These are women who are not entitled to honour-price.: 349
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