A very old apple tree - was it grafted?

My apples are no where near flowering yet but I have a pear tree in a pot which is flowering. I have a couple of fruit trees flowering that I planted as bare rooted plants last year which I asumed must have been pears as well,but now you have me wondering whether they are in fact apples.
In case you are wondering I was given three bare rooted trees off my Sister and they had no labelling so I stuck them in, onedied but the other two are flowering,one deep crimson flowers and the other white.
I also like surprises!