Trahtian

According to the Old English Dictionary:

trahtian

I. add: I a. to compose a treatise :-- Be þon ic gemune ꝥ ic sǽde in þám folclárum þæs godspelles þe ic trahtode be Tassilan mínre faðan hoc quod de Tharsilla amita mea in homiliis Euangelii dixisse me recolo, Gr. D. 286, 8. II. add: to deal with a subject, consider :-- Þá ongunnon hí trahtian and hwæthugu smeágean be his deáðe tractare de ejus morte aliqui conati sunt, Gr. D. 104, 27. Þá hí ongunnon trahtian hwæðer hí mihton ... ꝥ unmǽte stánclif onweg áleoþian dum multituto conaretur si possit ingens saxum levare, 213, 22. trahtian