And Bob’s Your Uncle

I love this British phrase, but until the Internet I had no certain idea of what it meant, i.e. an exclamation at the end of an explanation to show how easy it is to do something. Wikipedia and others claim that it might derive from a famous 1887 example of political nepotism. But I first encountered it in the talk of Napoleonic-era British seamen in Patrick O’Brien novels. It also pops up repeatedly in Brit author Terry Pratchett’s Discworld novels. The source at the link says it’s more likely to derive from the seventeenth century slang "all is bob," meaning everything is safe and satisfactory. Now I wonder why Americans of a certain age like to say something satisfactory is "Jake with me." Maybe Jake and Bob were brothers?