My wife and I have been to Europe more than 30 times in our decades of travel and
quite often we will select a personal guide especially when visiting a city for the first time. I will tell you right now and with no hesitation that Mariano is quite special. He is fluent in English and Spanish and, if I remember correctly, also in Portuguese).
In making our pre-visit arrangements my wife and I were quite specific in the places we wished to visit in York, some of which might not be on the 'normal' tourist route. For example: All Saints North Street a veritable treasury of medieval stained glass noted as some of the very best in all of England in this tiny treasure house. He knew everything about this hardly visited treasure from it being a location of worship from about 1050 with building 'treatments' in the 14th and 15th century. He knew almost every panel of the stained glass windows of "Pricke of conscience" (1410 ), " Lady Chapel" (1330), "Acts of Mercy" window (1404), "East window" (1410). and on and on and on. He talked about the chantries in the church and how the masses were said for the deceased; he pointed out the chancel ceilings and the hammer beams with the angel forms holding different items. Mariano appeared to know as much about this church as the custodian who joined us much later. He did exactly the same thing when we visitted the Church of the Holy Trinity at Goodramgate: explaining the box pews, the font, the mayoral boards, the pulpit, the slabs of the 'important" people; the hagioscope window in a side chapel permitting viewing by the chantry priest viewing the main service. My goodness, what an education!!
I remember as we walked from the train station where Mariano met us on our arrival he was a wealth of knowledge about York and its history; Celtic influence, Roman influence; Anglo-Saxon influence; Viking influence; Norman influence, and eventually what we term present English history. As he discussed the various historical phases of the city he was always pointing out the different architectural styles that we would pass by ( you will often be reminded to look up).
For some of the more tourist sites I'll give you a sample of our visit to the museum garden area: not only did we have a history of St. Mary's abbey but he also pointed out to us in the precinct area of the abbey the much earlier base of a Norman church. When we visited the Kings's manor Mariano explained how the manor was originally used for the abbots of the abbey. He pointed out the colorful coat of arms of Charles I and how King Charles made York his capital for a period during the war. Eventually York surrendered to the Parliamentary army.
Even though we did not visit the Minster with him we stood outside with him as he discussed some of the history of that great church and did so on "his" time and did not seek any additional cost. At the end of the day he took us to an old pub with almost every patron being a local person and my wife and I the only tourists ( it was a bit of a late lunch ). We finished with a handshake and a hug. A rich and rewarding experience!! As someone with some knowledge of English history I can tell you that Mariano was spot- on with his discussions of the history of York--no cute "touristy" manufactured stories for the client. He is very personable. We can honestly say that we would do it again if we go back to York.