Hello Grig, The best way to find out if you have any ancestors on Wikitree would be to start building the branches of your tree until you can connect to existing profiles. I see you are still a Guest member. Would you like to complete the membership process?
A maiden name is a woman’s surname before she marries and changes her name to her husband’s surname, so I am not sure what you mean when you talk about your father’s maiden name. Is Morete his first name?