Suppose Columbus had been supported by France or England instead of Spain, and he launched from one of their ports (Bristol, Nantes, or Bordeaux come to mind). ---
Would he have followed roughly the same south, then westerly course from these ports that he followed from Palos, Spain in OTL?
Or would he have aimed for the latitude of the Bahamas, even if it meant a longer journey when starting from ports further north?
Would an attempt at a longer voyage, or any other factor have increased the odds of the expedition being lost?
See attached .pdf which extrapolates more northerly versions of Columbus' first voyage.