To take one example of this policy: in 1621 King James I established his claims to the whole of Upper Ossory in County Laois, including the manor of Offerlane. James claimed royal inheritance (from the de Clare family) at an inquisition held at Port Laoise, and instituted a plantation of the area in 1626. John FitzPatrick, Baron Upper Ossory, refused to submit the manor of Castletown to the plantation. In 1537 his ancestor, Brian MacGiollaPadraig, had agreed to surrender Upper Ossory to King Henry VIII and was regranted the lordship under English law; in 1541 he was made Baron of Upper Ossory. After John FitzPatrick's death in 1626, his son Florence continued this opposition to the plantation on his estates. However, the Fitzpatricks were eventually forced to concede a portion of their lands.