Would a replacement monarchy choose a French general or a British royal?

Would a replacement monarchy choose a French general or a British royal?

A French general fits Napoleon's ascendancy. In this scenario, a British royal could advertise friendship with Britain and help seek protection from France and Italy.

Choosing a French general is associated here with the period when Napoleon was powerful. A British naval victory creates a different diplomatic incentive for a surviving Austria-Hungary. Installing a member of the British royal family could signal a new alignment with Britain. The hoped-for benefit would be British protection against French and Italian pressure.