Who is the patron saint of quilters?

While there is no patron saint of crochet, there are several patron saints of lace makers, closely related to crocheting, and I am sure one or the other will listen to your petition:
Anne
Crispian
Crispin
Elizabeth of Hungary
Francis of Assisi
John Regis
Luke the Apostle
Sebastian
Teresa of Avila

(As per Patron Saint Index)