One of my ancestral lines has two Lord Mayors of London in the Middle Ages in it - but there are many John Brownes and William Brownes named in records of the time. Worse, The Visitations of Northamptonshire are based on Harleian manuscripts that do not match wills - in which case the wills are the primary source, and the Visitation tree is inaccurate. It will take time to correct it all.
John Browne 1435 - 1498
There are other profiles that are correct or at least more correct which need to be merged with the one above. WikiTree profiles change and develop until they reach consensus with the correct sources, the correct lineages, traced back as far as possible with accuracy.
Next week, John Browne and all his twins will be correct, and well documented with primary sources (wills).