The application of the concept of
heir presumptive became increasing problematic, and less relevant, as Elizabeth's reign progressed. Until her death in 1568, it fitted quite well the claim of
Lady Catherine Grey to the throne, under the terms of the
will of Henry VIII.
Mary, Queen of Scots had a leading dynastic claim to represent the
House of Tudor, until her execution in 1587. Her son
James VI of Scotland became then the most obvious successor, in terms of practical politics, but it was supposed that there might be legal arguments against his coming to the English throne. Such arguments had previously been developed against the claim of the Catholic Queen Mary; they could be applied to King James.
A Conference was intended as an intervention in the debate on the succession. It set out a large number of genealogical facts, suggested that other criteria should be used, and hinted at the risk of a return to the instability of the
Wars of the Roses. It hit at King James's claim to the extent that it depended on the
House of Lancaster. Reaching back to the end of the 14th century, it traced his descent from an illegitimate son of
Katherine Swynford. There had been a "succession crisis" in France from 1589, and from 1590 the Infanta
Isabella Clara Eugenia had been the Spanish claimant. James VI has been taken as well-informed about the
Gallican position on church and state, in his works on monarchy, and the French example remained significant for him to the later
allegiance oath controversy. ==Content==