Saints Theodard and Lambert shared a distinctive rank in the liégeois rite. Of the thirteen local bishops featured in the annual cycle of saints’ feasts, these two alone were classified as martyrs. Through their martyrial status, Theodard and Lambert thus outshone the most distinguished early bishops of the diocese—Maternus (the diocesan “founder” and first bishop of Tongeren) and Servatius (first bishop of Maastricht)—venerated as mere confessors. Hagiographers recognized this distinction, as we might recall from Sigebert of Gembloux's late eleventh-century Vita Theodardi:

Sigebert's astute emphasis on the “equality” of the two episcopal martyrs concisely summarizes the multiple ways in which their cults would intersect. As we observed in chapter 1, Lambert figured prominently in Theodard's vita and liturgy as an active agent in the translation of Theodard's relics from the site of his martyrdom (near Speyer) to Liège—the very place soon to witness Lambert's own martyrdom. Similarly, we find a reciprocal association in the earliest extant hagiographic reference to Saint Theodard, which appears, significantly, in the Vita prima of Saint Lambert (written between 727 and 743). Both in life and especially in death, the two bishops shared an exceptional bond—as recognized explicitly in hagiographic literature and celebrated musically in the local liturgy.

Hagiographic and liturgical parallels between Saints Theodard and Lambert were especially tangible in the church housing their remains. While the cathedral marked the epicenter of Lambert's cult, built over the very soil sanctified by the titular patron's martyrial blood, this church also cultivated a special devotion to Theodard.