Oh, I’m absolutely certain they did – as a powerful noble House, the Manderlys would have brought their bannermen, soldiers, servants, etc. on their flight from the Reach, along with their wodgers of cash. You can even see that in the traditional title of the House as “Defender of the Dispossessed” – at the beginning at least, this likely referred to the people who the Manderlys brought with them who had lost their lands and property during the Manderlys’ expulsion.