There are no HAXBYEs found in any nearby records so perhaps her surname was either misrecorded, miscopied or is being misread.
Searching for records of people named H*b*y* reveals a single baptism: of Marmaduke in 1608 by Christopher HEBDYN. The coincidence of Ursula's son also being called Marmaduke cannot be ignored. (Hebden village is 9 miles west of Pateley Bridge.) An Ursula HEBDEN was baptized on 18 Dec 1606 in Ripon Cathedral by William HEBDEN1. This Ursula would have been 35 when she married, but that would explain her only having two children.